A procedure humans may have used to produce broccoli which has small flowers and thick stems is called selective breeding.
What is selective breeding?Selective breeding may be defined as a type of breeding through which parents with specific attributes are utilized and bred together in order to produce offspring with more desirable characteristics. This type of breeding is also known as artificial selection.
According to the context of this question, humans generally used this methodology of artificial selection and bred plants and animals for thousands of years. This mode of breeding is generally utilized in order to yield higher crop productivity with disease-resistant plants. Apart from this, other traits are also desirable with respect to condition.
Therefore, selective breeding is a procedure that humans may used to produce broccoli which has small flowers and thick stems.
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how would the body wave affected if red blood cells have low levels of hemoglobin
eukaryotic cells have developed more specialized functions than prokaryotic cells. what is this referring to?
a. prokaryotic cells do not have a means for movement like eukaryotic cells do
b. prokaryotic cells exist in multicellular organisms and differentiate, but eukaryotic cells do not.
c. eukaryotic cells are larger and have smaller surface area to volume ratios than prokaryotic cells.
d. eukaryotic cells have membrane-bound organelles with specific functions, but prokaryotic cells do not.
URGENT PLEASE HELP
DNA is comprised of smaller segments of genes that code for the production of a specific protein. The role of RNA polymerase in the initiation step of transcription is to?
A)bind and unwind the double helix.
B)recognize the promoter sequence of the gene.
C)all of the above
D)determine where gene synthesis will start.
30 Points! Peter and Rosemary Grant: What did they observe? What did they conclude? Brief Goals they studied.
what are unisexual organisms
Following a car accident, a person is able to walk, but she is not able to move her arms. This person most likely severed
a lumbar nerve
a coccygeal nerve
a cervical nerve
a sacral nerve
If most of the Earth is covered with water, how can there be water shortages?
Which type of energy causes the biggest concerns about its impact on the landscape?
Answer:
Which type of energy causes the biggest concerns about its impact on the landscape?
Explanation:
The use of wind energy, like any other human action, inevitably affects the environment, and its negative effects are felt in the soil, flora and fauna of the place where the wind farms are installed. But in spite of everything, these problems can be faced and minimized through proper planning.
The answer is: Wind energy.
What are the 3 types of fronts?
Cold, warm, and what?
Your neighbour cannot understand why her new flowerbed now contains pink flowers. She specifically bought and planted only red and white flowers. Explain which condition in genetics allows this to happen.
The presence of pink flowers in a flowerbed intended to contain only red and white flowers is due to incomplete dominance, where neither the red nor the white allele is completely dominant, resulting in a blend of the parental traits visible in the heterozygous flowers as a pink color.
When your neighbor planted only red and white flowers but now observes pink flowers, the explanation lies in the concept of incomplete dominance in genetics. In incomplete dominance, neither allele is completely dominant over the other, leading to a third phenotype that is a blend of the two parental traits. For instance, if a plant with a homozygous red allele (RR) is crossed with a plant with a homozygous white allele (WW), the heterozygous offspring (RW) will display pink flowers. This reveals a phenotype that is neither red nor white, but a mix of both, resulting in the presence of pink flowers.
With incomplete dominance, the red flower allele producing pigment called anthocyanin is not dominant over the white flower allele, and in the heterozygous plants (RW), anthocyanin is present in a reduced amount due to the one white allele. This reduced amount of red pigment on the white background of the flower petals gives the pink appearance. When two heterozygous plants are crossed (RW x RW), the expected offspring would exhibit a genotypic ratio of 1 RR:2 RW:1 WW and a phenotypic ratio of 1 red:2 pink:1 white.
Explain the phrase “the dose makes the poison”
Paracelsus was a 16th century Swiss German physician, alchemist, astrologer who found the discipline of toxicology. He came up with this basic principle of toxicology: The dose makes the poison.
“All things are poisons, for there is nothing without poisonous qualities. It is only the dose which makes a thing poison.”
So many of us misunderstand basic chemistry and what ‘toxic’ really means. I can relate. Chemistry was my WORST subject in high school. Most of what I have learned (and since become interested in) has been cultivated through my PhD studies and in projects since then.
Toxicity is an indicator of how poisonous a substance is to a biological entity. Any chemical can be toxic if absorbed or consumed in large enough amounts. Chemistry is all around us and we are all comprised of chemicals (matter). Some chemicals are man made others occur naturally: in our bodies, manufactured in plants, in our food and in the air we breathe. In fact, there are more naturally occurring chemicals than man-made ones. Chemical reactions and interactions in our bodies occur all the time.
Joni Kamiya-Rose posted this status update the other day on Facebook which, in turn, inspired my blog post for today.
To Joni’s last point… YES, wouldn’t that be great! I can’t imagine anyone who wouldn’t want safer options.
To (further) clear up misunderstandings and provide some context on toxicity, I crafted this table. In toxicology, the median lethal dose, LD50 (see column 3) is the dose required to kill half the members of a tested population after a specified testing time.
The test was developed by J.W. Trevan in 1927. In the table , I outline a variety of familiar (some less familiar) materials and their toxicity levels. Please note: the LD50 levels outlined in the table below are based on oral ingestions by rats. Toxicity rankings are based on the EPA’s categorization (I through IV) (Title 40 of the Code of Federal Regulations).
i hope this expliand it had to do little research
In an ecosystem, a wide range of organisms coexist. In a pond ecosystem, one can find amoebae, bacteria, green algae, and fish. Which of the following is the best conclusion one can make regarding the genetic diversity of these organisms? Green algae will have the greatest genetic diversity because they are photosynthetic and do not depend on other organisms to survive. Fish will have the greatest genetic diversity because they receive genetic material from a male and female source. Bacteria will have the greatest genetic diversity because their high reproductive rate ensures that some will survive. Amoebae will have the greatest genetic diversity because their genetic makeup allows them to survive in many environments.
Answer:
The correct answer would be "Fish will have the greatest genetic diversity because they receive genetic material from a male and female source".
Genetic diversity is defined as the variation in the total amount of genetic information among the individual of the population.
In sexually reproducing population, genetic diversity is present in high amount as compared to asexually reproducing population.
It is because of two reasons:
The genetic make of an individual is determined by 2 parents (father and mother).The event of crossing over takes place during formation of gametes.Together, they lead to the development of new combinations of alleles in an offspring which is different from both the parents.
Thus, fish would have the highest genetic diversity in their population.
Answer:
Fish will have the greatest genetic diversity because they receive genetic material from a male and female source
Explanation:
A farmer has a herd of cattle with an average weight of 1,000 pounds. He breeds a group of his heaviest cattle, which have an average weight of 1,800 pounds. The weight of each offspring is listed below. Offspring 1: 1,648 pounds Offspring 2: 1,640 pounds Offspring 3: 1,718 pounds Offspring 4: 1,794 pounds What’s the average weight of the offspring? The average weight of the offspring is pounds.
Answer:
The average weight would be 1700 pounds.
Explanation:
Given,
Weight of,
Offspring 1 = 1,648 pounds,
Offspring 2 = 1,640 pounds,
Offspring 3 = 1,718 pounds,
Offspring 4 = 1,794 pounds
Since,
[tex]\text{Average}=\frac{\text{Sum of all observations}}{\text{Number of the observations}}[/tex]
Hence, the average weight of the offspring
[tex]=\frac{1648+1640+1718+1794}{4}[/tex]
[tex]=\frac{6800}{4}[/tex]
[tex]=1700\text{ pounds}[/tex]
How would the jellyfish population be affected if sea turtles were removed?
Where is oxygen found or obtained from?
Answer:
Oxygen is obtained from photosynthesis process.
Explanation:
Oxygen is one of the most important element required for survival of living organism. Living beings inspire oxygen and expire carbon dioxide which is collectively called as respiration and is considered as most important biological process.
Plants prepare their own food through the process called photosynthesis. It is process through which the plants uses carbon dioxide and water as reactants and gives out glucose and oxygen as the end product.
The released product is sugar and gas, in which the sugar is consumed as food by other living organism and the gas called oxygen is used for respiration and other biological process. Thus it can be inferred that oxygen is obtained from process called photosynthesis.
All cells have the same genetic information, but do not express the same genes. How is this possible?
a. The differences are due to gene expression, which can be turned on and off.
b. Genetic material in a muscle cell is completely different from genetic material in a skin cell.
c. Genetic material is the same in all cells in the human body, except for reproductive cells.
d. Differences are due to major changes in genetic information from cell to cell.
Answer:
The other answer is WRONG.
Explanation:
While all cells contain the same DNA, or genetic code, the reason cells are specialized is due to GENE EXPRESSION. Gene expression in cells allows genes to be turned on or off. IS THE CORRECT ANSWER
All cells have the same genetic information, but do not express the same genes because differences are due to gene expression, which can be turned on and off.
WHAT IS GENE EXPRESSION?Gene expression is the phenomenon whereby living organisms use the information stored in their genes to synthesize useful products.
However, all living organisms contain the same genes in their cells, but do not express the same genes.
This is because genes are turned on or off at different times in different living organisms.
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Algae can survive on the sea floor only in
Polar areas
Deep areas
Shallow areas
High density areas
Answer: The correct answer is C. Shallow areas.
Algae are simple plants living in damp areas or water. It is a simple non-flowering plant including sea weeds and other unicellular forms. Some algae contain the chlorophyll pigment but they lack proper roots, leaves, stems and the vascular tissues.
Algae naturally grow on water. Being photosynthetic plant algae also requires sunlight for undergoing the process of photosynthesis and hence live in shallow areas of sea floor where the sunlight reaches.
what did marie and pierre curie discover about radioactivity
Answer:
the elements radium and polonium
Explanation:
why is it important for an organism to have the correct number of chromosomes
During replication, which sequence of nucleotides would bond with the DNA sequence TATGA?
The complementary DNA sequence to 5'-TATGA-3' is 3'-ATACT-5', following the base pairing rules of A with T and G with C during DNA replication.
During DNA replication, the sequence of nucleotides that would bond with the DNA sequence 5'-TATGA-3' is 3'-ATACT-5'. DNA replication involves the pairing of complementary bases where adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G). Therefore, each nucleotide in the given sequence pairs with its complement on the new strand being formed.
Here's how the pairing works:
The first 'T' in the original sequence pairs with an 'A'
The 'A' pairs with a 'T'
The 'T' again pairs with an 'A'
The 'G' pairs with a 'C'
The last 'A' pairs with a 'T'
So, the complementary strand in the direction of 3' to 5' will be 3'-ATACT-5'.
How are the energy of wind and flowing water each related to solar energy?
ticks feed on deer blood to the deers that detriment
True. Ticks are parasitic organisms that feed on the blood of hosts including deer. These ticks can spread pathogens between hosts, potentially causing diseases like Lyme disease. A tick infestation may also affect a deer's overall health.
Explanation:It seems the student is asking about the impact of ticks feeding on the blood of deer, which falls under the Biology subject, specifically related to parasitism. Ticks are parasites that survive by feeding on the blood of a host.
Deer are common hosts for several types of ticks. When a tick feeds on a deer's blood, the tick might ingest any pathogens in the deer's blood. As ticks continue feeding and switching hosts, they may spread these pathogens to other organisms, including humans. This can lead to diseases such as Lyme disease, amongst others.
Over time, tick infestations can also lead to adverse effects on the deer's health, such as reduced body weight and secondary infections from tick bites.
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The complete question is:
True/False:
ticks feed on deer blood to the deers that detriment
Describe three adaptive advantages of the mammalian autonomy
Which process transfers pollen from the male reproductive structures to the female reproductive structures?
The processes known as pollination which is responsible for the transfer of pollen from the male reproductive structures to the female reproductive structures
Explanation:The sperms are produced in the male sex organs which are separate from the female reproductive organs which is responsible for the production of eggs.The plants sperms are known as pollen grains. As plants are unable to move, so this transfer is done by the process of pollination.Pollination can be done by air or water movement.In air pollination, pollen grains fly through air to reach the stigma of female reproductive organs of plants.Answer:
pollination
Explanation:
big brain
Which type of biotechnology is used by scientists when they alter the DNA of a plant to make it grow faster?
Genetic engineering because the genes of the plants were modified
Genetic engineering because it is always helpful to society
Artificial selection because the DNA of the plant was changed
Artificial selection because it always produces desirable traits
The branch of biology which deals with technology along with the living cells is called biotechnology.
The tools use for biotechnologies are:-
Alien DNA PlasmidVectorNucleasesDNA ligaseScientists use genetic engineering to alter the DNA sequence of an organism to get the desired product.
Therefore, scientists use Genetic engineering because the genes of the plants were modified.
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what are pheromones?
1. mating behaviors
2. changes in appearance
3 . chemical signals
4. patterns of behavior
Chemical signals - natures love potion ;)
The process of photosynthesis converts carbon atoms from carbon dioxide into _______. A. sugars B. hydrogen C. oxygen D. salts
Answer:
Sugars is the answer
The process of photosynthesis converts carbon atoms from carbon dioxide into sugars. Therefore, option A is correct.
What is photosynthesis?In the physicochemical process known as "photosynthesis," green plants employ light energy to propel the synthesis of organic molecules. In the end, sunlight is the sole source of energy for all life on Earth. The foundation of life on earth is the photosynthesis process, which plants use to harness solar energy.
Chloroplasts, which house the chlorophyll in plants, are where photosynthesis occurs. The thylakoid membrane, a third inner membrane that creates long folds inside the chloroplast and is bordered by a double membrane, is present inside chloroplasts.
It converts carbon atoms from carbon dioxide into sugar. Hence, option A is correct.
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In the 1990s, scientists showed that Archaea and Bacteria are very different groups of organisms. How did this impact the classification system of organisms?
The levels of classification decreased.
The levels of classification increased.
The trinomial nomenclature was introduced.
The binomial nomenclature was introduced.
What is the independent variable and dependent variable in a Cartesian diver?
In the Cartesian diver experiment, the independent variable could be the pressure applied to the system, and the dependent variable is the depth at which the diver sinks or floats. Pressure is plotted on the x-axis and diver depth on the y-axis in a graph. The y-intercept is the depth at which the diver is when no pressure is applied, while the slope shows how depth varies with pressure.
Explanation:In a Cartesian diver experiment, the independent variable is the variable that you control or manipulate. This could be the amount of pressure applied to the closed system in which the diver is located. The dependent variable is the result of that manipulation, which in this case could be the depth at which the diver sinks or floats.
For example, if you squeeze the bottle containing the Cartesian diver, you are increasing the pressure; this is your independent variable. The response to this, the depth at which the diver moves, is the dependent variable because it depends on the pressure applied. In a graph depicting this relationship, the applied pressure would be plotted on the x-axis (horizontal), and the diver's depth would be plotted on the y-axis (vertical).
The y-intercept in a graph represents the value of the dependent variable when the independent variable is zero. If we consider a straight-line graph formula y = mx + b, where m is the slope, and b is the y-intercept, the slope indicates how much the dependent variable changes for a unit change in the independent variable.
Which statement is correct?
Block A has the greatest density.
Block B has the greatest density.
The density of Block A is equal to the density of Block B.
The density of Block B is equal to the density of Block C.
Answer: Block A has the greatest density.
Explanation:
Density is defined as the mass contained per unit volume.
[tex]Density=\frac{mass}{Volume}[/tex]
To calculate the volume of cuboid, we use the equation:
[tex]V=lbh[/tex]
where,
V = volume of cuboid
l = length of cuboid
b = breadth of cuboid
h = height of cuboid
Putting values in above equation, we get:
a) Block A:
mass = 3 kg
Volume = [tex]2cm\times 4cm\times 6cm=48cm^3[/tex]
[tex]Density=\frac{3kg}{48cm^3}=0.0625kg/cm^3[/tex]
b) Block B:
mass = 1 kg
Volume = [tex]2cm\times 4cm\times 6cm=48cm^3[/tex]
[tex]Density=\frac{1kg}{48cm^3}=0.02kg/cm^3[/tex]
c) Block C:
mass = 2 kg
Volume = [tex]2cm\times 4cm\times 6cm=48cm^3[/tex]
[tex]Density=\frac{2kg}{48cm^3}=0.04kg/cm^3[/tex]
Thus Block A has greatest density.