Sickle cell anemia is known to run in a family.
What best describes offspring 4?
A) female carrier of the disease
B) female having the disease
C) male carrier of the disease
D) male having the disease
Answers
hope this help
From Ke'dar
From the given pedigree analysis, the offspring 4 depicts male having the disease. Thus, the correct option is D.
What is pedigree analysis?Pedigree analysis is a figurative description of the inheritance of a particular gene in a family from parents to their offspring in a scientific manner. It is a family tree and shows the genotype of the individuals for that trait.
Symbols used in the pedigree chart:
1. Circle - for depicting female
2. Square - for depicting male
3. Unshaded shape - for unaffected individuals
4. Fully shaded shape - for affected individuals, those having the disease
5. Half-shaded shape - for heterozygous individuals, those who are carriers of the trait
From the given diagram, it is observed that both the parents are heterozygous dominant, meaning they are carriers of sickle cell anaemia. As a result, the trait for the disease has been transmitted to the offspring.
Out of the 4 offspring, the first is unaffected and does not have the allele for the disease, offspring 2 and 3 are carriers and offspring 4 is affected with the disease as he is homozygous recessive for the trait.
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Related Questions
To which phylum would a flowering plant that produces seeds belong?
A. Bryophyta B. Lycophyta C. Anthophyta D. Ginkgophyta
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Can I get some help please? Thanks!
Which structures help both plant and animal cells meet the challenges of life?
A. flagella and mitochondria
B. vacuoles and cell membrane
C. cell wall and lysosomes
D. nucleus and cell membrane
Answers
A. flagella and mitochondria
B. vacuoles and cell membrane
C. cell wall and lysosomes
D. nucleus and cell membrane
_________________________
The answer to your question is Letter D. "Nucleus and cell membrane."
Please message me if I'm wrong, I would be deeply sorry. Thank you!
The correct answer is option D
Nucleus and cell membrane.
As always, it is my pleasure to help students like you!
How do natural selection and evolution contribute to antibiotic-resistant bacteria ?
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What is a spring tide abs would a spring tide occur
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A spring tide occurs during the new and full moon phases when the Sun and Moon align, leading to the highest and lowest tides of the month. This contrast creates the greatest tidal range.
A spring tide occurs when the gravitational forces of the Sun and Moon align either on the same side of Earth or on opposite sides.
This alignment happens during the new moon and full moon phases, where the combined gravitational pull results in the highest high tides and the lowest low tides of the month, leading to the greatest tidal range.Conversely, a neap tide occurs when the Sun and Moon are at right angles to each other, during the first and third quarters of the moon. During this period, their gravitational forces partially offset each other, leading to the smallest tidal ranges of the month.when a divergent boundary occurs under the ocean it is called
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Which is a difference between antibodies and antigens?
Antigens destroy pathogens; antibodies trigger the production of antigens.
Antigens trigger the production of antibodies; antibodies destroy pathogens.
Antigens are components of the lymphatic system; antibodies are components of the immune system.
Antigens are components of the immune system; antibodies are components of the lymphatic system.
Answers
Antigens trigger the production of antibodies and antibodies destroy pathogens
Antigens are foreign substances that trigger the production of antibodies in the body. Antibodies, produced by the immune system, recognize and neutralize these antigens, thus helping to protect the body from infections.
Explanation:The correct option is: Antigens trigger the production of antibodies; antibodies destroy pathogens. Antigens are foreign substances (usually proteins) that invade the body, like bacteria, viruses, or allergens. When your body recognizes these foreign substances, it produces antibodies. Antibodies are proteins produced by the immune system that can identify and neutralize the antigens. In other words, antigens stimulate your immune system to produce antibodies against them, and then the antibodies bind to the antigens and eliminate them, protecting the body from infections.
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Understand how fossils, the Law of Superposition and geologic timescale support the theory of evolution
Answers
These elements works in a synergy to explain and to help persons of interest understand the idea of evolution which stresses out that the modern day species came from a distinctively different species.
Which of the following is the main evidence of life in the early universe?
Question 1 options:
dinosaur fossils
rock layering
plant remains
cyanobacteria
5.17 Unit Test: History of Life on Earth, Part 1 Pool 2
Question 2 (3 points)
Question 2 Unsaved
Which of the following would have resulted from the functions of prokaryotes on early Earth?
Question 2 options:
Earth's oceans grew larger
less oxygen gas became present in the atmosphere
less carbon became present in Earth's soil
more oxygen gas became present in the atmosphere
5.17 Unit Test: History of Life on Earth, Part 1 Pool 3
Question 3 (3 points)
Question 3 Unsaved
Which of the following was most likely not present in creating the amino acids of early Earth's waters of the past?
Question 3 options:
sulfur
nitrogen
hydrogen
ammonia
5.17 Unit Test: History of Life on Earth, Part 1 Pool 4
Question 4 (3 points)
Question 4 Unsaved
Which of the following is used as evidence in supporting the idea that life changes over time?
Question 4 options:
the big bang theory
the existence of homologous structures
the similarities in body systems such as the nervous and circulatory systems
the time period in which an embryo develops
5.17 Unit Test: History of Life on Earth, Part 1 Pool 5
Question 5 (3 points)
Question 5 Unsaved
The diagram shows embryo development of four different animals. How is this evidence used to suggest that life changes over time?
History of Life on Earth
Question 5 options:
Late-stage embryonic development illustrates how acquired characteristics have caused these species to become more differentiated over time.
The DNA of all these life forms begins exactly the same and then changes over time as it replicates to produce the organisms different traits.
These stages indicate that animals within a species must have changed over time.
Striking similarities at early developmental stages is evidence that they came from a common ancestor.
5.17 Unit Test: History of Life on Earth, Part 1 Pool 6
Question 6 (3 points)
Question 6 Unsaved
Which of the following describes how homologous structures provide evidence to support that life changes over time?
Question 6 options:
some animals exhibit similar structures, possibly due to a common ancestor
some animals exhibit similar stages of embryonic development
some animals exhibit structures that are no longer used for any purpose
some fossils exhibit similar biological proteins
Question 7 (3 points)
Question 7 Unsaved
How can these forelimbs explain how life changes over time?
History of Life on Earth
Question 7 options:
These illustrations show the progressive development of the forelimb in a species over time, one example of how life has changed over time.
These illustrations show the homologous forelimbs of four different species with enough similarities to suggest all had a common ancestor.
The illustrations show the vestigial structures of four different species that once had a function in an ancestral organism but no longer have a function today.
These illustrations show the variety of bone structures that exist among different species and how life has changed over time as new species develop.
Answers
For number two is D
For number 5 I think is the striking similarities at early development stages is evidence that they came from a common ancestor.
I hope this helps.
Answer:
number 2 is D im pretty sure
Explanation:
From the images, what can you infer about the wings of the bat and the butterfly? They have a similar structure but perform a different function. They have a similar structure and perform a similar function. They have a different structure and perform a different function. They have a different structure but perform a similar function.
Answers
This is known as an analogous structure.
Answer:
They have a different structure but perform a similar function
Beth learned in her science class that white blood cells in the human body capture harmful material by engulfing them. Then they digest them using enzymes, thus protecting the body from infection. Which eukaryote has a similar mode of nutrition?
Answers
Answer:
The Answer Is C): Amoeba
Explanation:
Plz Mark Me As Brainliest
Amoebas are eukaryotic microorganisms that have a similar mode of nutrition to the process described for white blood cells. They capture and engulf food particles, such as bacteria or small organic particles, through a process called phagocytosis.
After engulfing the food particle, amoebas form a food vacuole around it. Within the food vacuole, enzymes are secreted to digest the captured material, allowing the amoeba to obtain nutrients and energy from the ingested material.
This process of engulfing and digesting food is known as phagocytic nutrition and is a characteristic feature of certain eukaryotic organisms like amoebas.
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What happens to the recessive allele in a heterozygous offspring
Answers
In a heterozygous offspring, the recessive allele becomes latent. It can be passed on to future generations and may show up in the phenotype if an offspring is homozygous recessive.
Explanation:In a heterozygous offspring, the recessive allele essentially becomes 'latent', meaning it is present but not expressed in the phenotype. This occurs due to Mendel's law of dominance which states that in a heterozygote, the dominant allele masks the effect of the recessive allele. The recessive allele will only be observable in offspring that are homozygous recessive in nature.
When parents with contrasting dominant and recessive traits reproduce, their offspring will mostly be heterozygous but will express the dominant trait in their phenotype. However, if these heterozygous offspring reproduce, the recessive trait can reappear in the next generation. This happens due to random segregation during formation of gametes where each allele from a pair has an equal chance of being passed on to the offspring.
The recessive trait can appear in the third generation with a 25% probability when heterozygous parents reproduce. This is because there's a 1 in 4 chance of getting a homozygous recessive offspring - that is, an offspring that inherits the recessive allele from both parents.
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Prokaryotes that live in almost every habitat are...
Answers
Analysis Questions:
1. List five observations Darwin made about the Amblyrhynchus lizards.
2. Describe two examples of structural adaptations that Darwin observed.
3. Describe two behavioral adaptations that Darwin observed.
4. Explain how these observations influenced his theory of evolution?
Answers
a. They measure about 2-3 feet long.
b. They are cold-blooded.
c. They feed on crab and sea lion feces.
d. They are the only marine iguanas in the world.
e. Their nostrils are connected to salt glands that allow them to expel excess sea salt.
2. Describe two examples of structural adaptations that Darwin observed.
a. Darwin discovered that finches in the Galapagos have thirteen different kinds of beaks.
b. Darwin observed two kinds of giant tortoises that are distinguished by the shapes of their carapaces (dome-shaped and saddle-shaped).
3. Describe two behavioral adaptations that Darwin observed.
a. The marine iguanas have developed several ways of coping with the cold. At night, they huddle together for warmth.
b. In the face of famine, the marine iguanas have adapted by having the ability to shrink their body size. They are able to grow back to their original size once the food is supply increases.
4. Explain how these observations influenced his theory of evolution?
These observations led Darwin to believe that if a certain trait is more advantageous in a specific environment, then the carriers of that trait are more likely to survive into adulthood and to generate offspring than those who do not have that trait. Eventually, the advantageous traits for a species will proliferate. Darwin later called this as "survival of the fittest".
I completely agree those answers got me a 100
Tay Sach's disease is a fatal genetic condition, in which affected individuals cannot metabolize fats properly. Children who inherit the disease rarely live past the age of five. The disease is caused by the presence of a homozygous recessive gene. If a child has Tay Sach's disease, what would her parents' genotypes be?
Answers
Answer: Her father is heterozygous; her mother is heterozygous.
Explanation:
The selective breeding of wild mustard has _____________ _________ and produced at least four other vegetable crops.
Answers
which statement best describes how a muscle moves a bone
Answers
Muscles move bones by contracting and pulling on tendons attached to the bones, which causes the bones to move like levers with joints serving as fulcrums.
Explanation:The statement that best describes how a muscle moves a bone is that skeletal muscles contract, which pulls on tendons that are connected to bones, causing movement. Muscles work across a joint and are attached to both sides of a joint by tendons, which are strong cords of connective tissue. When these muscles contract, they shorten and pull on bones, making them move like levers with joints acting as fulcrums. This is how the muscles facilitate movement in the body by applying force to the skeleton.
Understand how and why heredity increases the diversity among organisms
Answers
Gould and Eldredge proposed this new theory called
Answers
Final answer:
Paleontologists Stephen Jay Gould and Niles Eldredge proposed the theory of punctuated equilibria, which describes the pattern of evolution as long periods of stability interrupted by brief periods of rapid change, explaining the fossil record's structure and the relative stability of species over time.
Explanation:
Gould and Eldredge proposed a new evolutionary theory known as punctuated equilibria. This theory suggests that instead of species evolving continuously over time, they remain stable for long periods, known as equilibrium, and undergo rapid evolution during relatively brief periods of ecological instability, leading to new species. These evolutionary bursts punctuate the long periods of stasis. Punctuated equilibria helps explain the patterns observed in the fossil record, including the presence of small anatomical gaps between closely related fossil forms. The theory underscores the stability of species over time, with adaptation occurring primarily during the formation of a new species, rather than as a constant process. While it incorporates genetic principles, punctuated equilibria is primarily a theory of macroevolution, focusing on the transitions between species in geological time.
who was evolution established by
Answers
Temperatures sunlight and water are examples of what
Answers
Answer:
abiiotic
Explanation:
how to differentiate between ectoplasm, endoplasm and cytoplasm?
Answers
give 3 examples where kinetic and potential energy is transformed into each other both ways.
Answers
Potential energy is converted into kinetic energy. Before the yo-yo begins its fall it has stored energy due to its position. At the top it has its maximum potential energy. As it starts to fall the potential energy begins to be changed into kinetic energy. At the bottom its potential energy has been converted into kinetic energy so that it now has its maximum kinetic energy.
A waterfall has both potential and kinetic energy. The water at the top of Bridal Veil Falls has stored potential energy. When the water begins to fall, its potential energy is changed into kinetic energy. This change in energy also happens at Niagara Falls where it is used to provide electricity from the transformation of mechanical and electromagnetic energy to parts of the northeastern United States.
in most animal cells a complex Network of proteins provides
which of the following
Answers
Hope this helps :D
Answer:
Option D, All of the above
Explanation:
Complete Questions -
In most animal cells a complex Network of proteins provides which of the following -
A.Organization B.Movement C.Shape D. All of the above
Solution -
Proteins are complex molecule that plays a critical role in the body. They are responsible for defining the shape of the body and regulate its function and structure. Based on their functions, proteins are of different types such as antibody ( protective proteins), enzyme (catalyst), messenger ( transmit signals to co-ordinate between functioning of cells, tissues and organs), structural protein (that provide structure to allow a body to move) and transport protein (transport essential molecules with in the cell and through out the body)
Thus, option D is correct
The butterflies shown below all belong to the same species, but one of them has inherited a rare mutation for blue wings rather than orange wings. The butterflies feed on nectar from orange flowers, and their color acts as camouflage while they feed.
What will most likely happen to the butterfly with blue wings?
Answers
Their population will decrease while that of orange-winged butterflies will increase. Therefore the allelic frequency for blue colored wings will be eventually eliminated from the population.
This is because the blue-winged butterflies will be predated more because they are more conspicuous. Most will not produce before they are predated on hence reducing their numbers. The next generations will have more and more of orange-winged butterflies until the blue-winged butterflies no longer exist in the population.
Answer:
It will be less likely to survive because it will be more visible to predators.
I know it's a late answer but hopefully it will help others too.
What feature would you expect to find in a population in which sexual selection depends on female choice?
Answers
Where sexual selection is based on male competitiveness, bright-colored males are expected to be seen.
What distinguishes sexual selection?Sexual selection theory holds that the emergence of some noticeable physical qualities in animals, such as pronounced colour, increased size, or spectacular adornments, may provide the possessors of these traits more success in attracting mates.
Because the number of gene copies in the next generation is also dependent on relative mating success, the strength of sexual selection is proportional to the relative increase in the number of offspring surviving to reproduce (Sn) and the relative number of mates a male with that character obtains.
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What are the main necessary qualities for manned vehicles of the space program? Select all that apply.
durability
reliability
efficiency
miniaturization
Answers
The answers are actually reliability and miniaturization. Brainliest please.
Answer:
The answers are actually:
Durability
Reliabilty
Explanation:
I answered these and i got it right.
Comparisons of cranial capacity between A. africanus and the later species H. erectus and A. boisei show that H. erectus had much larger brains, while A. boisei had only slightly larger brains, than A. africanus. There is evidence that A. africanus and H. erectus used tools, though the tools made by H. erectus required more skill and planning to craft. How do you think the toolmaking abilities of A. boisei would have compared? (A)A. boisei would have had very little ability to make tools, unlike the other two hominids.(B) A. boisei would have been able to make more advanced tools than the other two hominids. (C)A. boisei would have been able to make tools that were less advanced than H. erectus. (D)A. boisei would have made tools that were less advanced than those made by A. africanus.
Answers
Answer:
A. boisei would have been able to make tools that were less advanced than H. erectus.
Explanation:
because im him
under ideal conditions, bacteria have a generation time of about 20 minutes. Humans have a generation time of about 20 years. Which would you expect to evolve faster? Why?
Answers
Let me know if you need further explanation.
Bacteria would be expected to evolve faster than humans due to their significantly shorter generation time. This allows for frequent genetic recombination and mutation, resulting in rapid adaptation to environmental changes.
Explanation:Under ideal conditions, bacteria, such as Escherichia coli, can have a generation time as short as 20 minutes due to binary fission. This rapid reproduction, coupled with mechanisms of genetic recombination and high rates of mutation, results in the rapid evolution of bacteria. They can respond to environmental changes, such as the introduction of an antibiotic, very swiftly.
On the other hand, humans, as eukaryotic organisms, have a typical generation time of about 20 years. The significantly longer generation time in humans slows the pace of evolution considerably when compared to bacteria.
Therefore, under ideal conditions, we would expect bacteria to evolve faster than humans due to their shorter generation time, allowing for more frequent genetic recombination and mutation.
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Neither of Josie's parents play a musical instrument. Josie thinks that she won't be able to play an instrument because her parents can't. Is she right? Why or why not?
Answers
Which organelles store food and other materials needed by the cell?
vacuoles
ribosomes
chloroplasts
mitochondria
Answers
Ribosome makes protein for the cell
Chloroplasts create food for only the plant cell( animal cells does not have chloroplast)
Mitochondria makes food for the animal cell? This one I’m not sure of.
The vacuoles are the organelles that store food and other materials required by the cell. They maintain pressure within the cell and support its structure besides storing substances. Other organelles have differing functions such as protein production, photosynthesis, and energy production.
Explanation:The organelles that store food and other materials needed by the cell are the vacuoles. Located mainly in plant cells, vacuoles are large, fluid-filled organelles that store substances like water, nutrients, or waste products. In addition to storing substances, they also contribute to many other functions within the cell such as maintaining pressure within the cell which helps the plant cell keep its structure.
It's worth noting that other organelles like ribosomes, chloroplasts, and mitochondria also play significant roles within cells. Ribosomes produce proteins, chloroplasts are involved in photosynthesis in plant cells, and mitochondria are responsible for producing energy in the cell through the process of cellular respiration.
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