how did Darwin explain the differences in traits?
Natural selection is the theory behind evolution put forth by Charles Darwin.
What are observations of Darwin?The scarcity of resources in nature, animals with heritable features that promote survival and reproduction will typically produce more offspring than their contemporaries, leading to an increase in the frequency of such traits across successive generations.
He thought that acquired qualities are passed down through generations and help organisms adapt. He described the transmission of qualities from parents to children.
He suggested that the main driving force behind evolution is natural selection. He suggested that the main driving force behind evolution is natural selection.
Therefore, Darwin could understand that many features are heritable despite not being aware of the existence of genes.
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Charles Darwin explained differences in traits using his theory of natural selection, where traits that provide a reproductive advantage are naturally chosen over generations. This leads to evolutionary changes in populations, a process called 'descent with modification'. Darwin noted physical and behavioral traits evolve through this mechanism, adapting species to their environment.
Explanation:How Charles Darwin Explained the Differences in Traits
Charles Darwin explained the differences in traits among species through the concept of natural selection. This process is created by the inheritance of traits, the inevitable competition between individuals for limited resources, and the variation of traits within a population. Darwin compared this process to artificial selection, where humans breed plants and animals for desired traits, to help illustrate how nature selects for advantageous traits without human intervention. These small changes, driven by natural selection, accumulate over time resulting in significant evolutionary change within populations—a process Darwin referred to as "descent with modification".
In addition to physical characteristics, Darwin included instincts and inherited behavior as traits influenced by natural selection. He reasoned that physical adaptations like wings or eyes would only be beneficial if accompanied by the necessary instincts and inherited behaviors to utilize them effectively. Darwin's central thesis was that differences between varieties, breeds, and species were a matter of degree, resulting from biases in survival and reproduction over time. He recognized some challenges to his theory, such as the existence of sterile worker insects, which do not seem to fit neatly into the framework of traits being passed down through reproduction. However, he posited that their existence still contributed to the species' overall survival.
Darwin's insights were enriched by observing patterns of inheritance and variation in both artificially selected organisms and those in nature. By understanding that beneficial traits become more common in a population over time, Darwin concluded that populations evolve as they become more adapted to their environment through the mechanism of natural selection.
The pattern of the pollen grain surface is called:
Elephants exhibit herding behavior. When they travel, the oldest and largest members often travel on the outer edges of the group. Why is this important to the survival of the species
Answer: Elephants have few offsprings, so they need to protect them from predators.
Explanation:
Herd behaviour is a behaviour which is collectively shown by organisms in the group. The organisms move, feed and fight the predator in groups. This is a kind of social behavior shown even by the animals.
Elephants also show this kind of social behavior. They move in herd (flock). The tall and older members move at the edges when the elephants moce in herd. This is to protect the young once in the middle from the attack of predators as the young once are incapable of protecting themselves from predators. Also the elephant mother gives birth to only one offspring at a time. Thus the population may suffer if the offspring is not protected.
help!!
when was the terms "acid rain" first used??
A) 1753
B) 1960
C) 1980
D) 1852
The adjustable opening in the center of the eye through which light enters is called the: question 19 options:
a.lens.
b.pupil.
c.cornea.
d.iris.
Which factor would be least likely to contribute to the development of a new species?
The factor that will be least likely to contribute to the development of a new species is plentiful resources within the environment occupied by the species. The correct option is 1.
What is speciation?A new plant or animal species is developed through speciation. When a group within a species separates from other members of its species and develops its own distinct features, speciation has taken place.
Rivers change their courses, mountains rise, continents drift, organisms migrate, and what was once a continuous population is split into two or more smaller populations, according to scientists, who believe that geographic isolation is a common method for the process of speciation to start.
The abundance of resources in the ecosystem the species inhabits will be the factor least likely to aid in the formation of a new species.
Thus, the correct option is 1.
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Your question seems incomplete, the probable complete question is:
Which factor would be least likely to contribute to the development of a new species?
(1) plentiful resources within the environment occupied by the species
(2) increased genetic variation within the species
(3) changes in the environment of the species
(4) the ability of the species to increase its numbers by reproduction
An organism occupying the 3rd trophic level is best described as a ________.
What section of the large intestine is associated with the liver?
Answer:
The small intestines
Explanation:
Deduce how two genes for the different traits that are on the the same chromosomes can fail to be inherited together
You succeed in inducing a mutation that causes a loss of function in the fungal component of soredia. you excitedly inform your lab partner of this, but not being familiar with fungi, he does not understand the significance of what has occurred. the most likely outcome of this loss of function is _______.
Homeostasis is a (1 point)
A) step in embryological development.
B) stable internal environment.
C) response to a stimulus.
D) phylum of invertebrates.
5. When an animal’s environment changes, sexual reproduction improves a species’ ability to (1 point)
A) react to new stimuli.
B) increase its numbers rapidly.
C) adapt to new living conditions.
D) produce genetically identical offspring.,
The direction of bilateral transfer between two limbs is typically:
Which is a goal of the Human Genome Project
A goal of the Human Genome Project is this: To determine the complete and correct sequence of the 3 billion nucleotides that make up the whole human DNA.
What is the goal of the project?The goal of the Human Genome Project is to determine the complete and accurate sequence of all the nucleotides that make up the human body.
If scientists are able to complete this goal successfully, then they would have an enhanced understanding of the human system and possibly make some discoveries related to some diseases.
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During the removal of wastes in a cell, the waste products move
A. from the nucleus of the cell to one side of the cytoplasm for storage.
B. from an area of lower concentration to an area of higher concentration.
C. from the cytoplasm of the cell to one side of the nucleus for storage.
D. from an area of higher concentration to an area of lower concentration.,
What event triggered the main eruption of mount st. helens may 1980? multiple choice melting snow caused a huge steam eruption. magma encountered groundwater and exploded. a landslide removed rocks and released pressure on the magma. all of these?
What are microscopic blood vessels that connect arteries and veins?
The nurse is caring for a child with a urinary tract infection. the health care provider has ordered cephalexin 125 mg by mouth every 8 hours. cephalexin is available 250 mg per 5 ml. how many milliliters should the nurse administer per dose? record your answer using one decimal place.
The membranes of a client who is at 39 weeks' gestation have ruptured spontaneously. examination in the emergency department reveals that her cervix is dilated 4 cm and 75% effaced, and the fetal heart rate is 136 beats/min. she and her partner are admitted to the birthing unit. what is the nurse's primary intervention upon the client's arrival to the unit?
Administer oxygen at 8 to 10 liters by mask
Which of these is a drawback of hydraulic fracturing?
A. Water pollution from acid mine drainage
B. Reduced frequency of earthquakes
C. Coastal damage from oil spills
D. Contamination of groundwater
Answer: D. Contamination of groundwater
Hydraulic fracturing is also called as fracking. It is a drilling process which is used for the excavation of oil and natural gas from the shale rock beneath the earth crust. In this the hydraulic pressure is used by using the chemicals mixed with sand and water. This water is injected forcefully into the rocks. The gas or oil comes out from the gaps created. This process can contaminate the groundwater reservoir.
Answer:
D. Contamination of groundwater
Explanation:
In photosynthesis, the chemiosmotic production of atp question 37 options:
a.is a result of the oxidation of glucose.
b.is done by the calvin cycle.
c.requires oxygen.
d.is similar to the production of atp in mitochondria.
Chemiosmosis is the process used to generate ATP during glucose catabolism and in photosynthesis. It involves the movement of protons across a membrane to drive the synthesis of ATP. The process is similar in both mitochondria and photosynthesis.
Explanation:Chemiosmosis is the process used to generate 90% of the ATP made during glucose catabolism. It is also used in the light reactions of photosynthesis to convert sunlight energy into ATP, a process called photophosphorylation. The production of ATP through chemiosmosis in photosynthesis is similar to the production of ATP in mitochondria. In both cases, ATP is generated through the movement of protons across a membrane and their subsequent flow back, driving the synthesis of ATP.
Which statement is correct, with regard to the catalase enzyme catalyzing the breakdown of hydrogen peroxide into water and oxygen?
A. Water is a substrate in this reaction.
B. Bonds in the Hydrogen peroxide are weakened in catalase's active site, allowing the chemical reaction to occur.
C. Hydrogen peroxide is produced by the catalase enzyme.
D. The breakdown of hydrogen peroxide would still occur naturally but occurs less rapidly with the catalase enzyme.
Oxygen moving through the plasma membrane down its concentration gradient is an example of
If destroyed, would result in the greatest loss of species diversity? question 7 options:
a.tropical rain forest
b.tundra
c.grasslands
d.deciduous forests
e.islands
A client who is at risk for seizures as a result of severe preeclampsia is receiving an intravenous infusion of magnesium sulfate. what findings cause the nurse to determine that the client is showing signs of magnesium sulfate toxicity? select all that ap
Your roommate�s brother and sister-in-law just had a baby girl. their daughter was born with very low birth weight. they did not get much help in terms of advice and are now leaving the hospital after only being there 7 days. what type of close-contact intervention would you advise for them?
For a newborn with very low birth weight, interventions such as Kangaroo Mother Care, regular pediatrician visits, and maintaining a clean and safe home environment can be beneficial.
Explanation:In cases where a baby is born with a very low birth weight, a recommended intervention approach is Kangaroo Mother Care (KMC). This is a method of care where the newborn is placed skin-to-skin on the mother's chest, which can help regulate the baby's temperature, heart rate, and breathing. It can also support breastfeeding and bonding. Regular pediatrician visits are also essential to monitor the baby's progress and address any potential health issues early. Last but not least, the parents should make sure the home environment is safe and clean to minimize the risk of any infections.
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What is the adaptive reason for low levels of melanin at higher latitudes?
Low melanin levels in high latitudes are an evolutionary adaptation that balances the skin's need to produce Vitamin D in low sunlight conditions, and the necessity to protect itself against harmful ultraviolet radiation.
Explanation:The adaptive reason for low levels of melanin at higher latitudes is closely tied to evolutionary adaptations meant to balance the human body's requirement for Vitamin D and folic acid, both of which are crucial to our health and well-being.
Our skin produces melanin primarily to protect against damage by ultraviolet radiation, which can cause harm, such as the breakdown of folic acid. The darker the skin (or the higher the melanin concentration), the greater the protection it offers. However, a high concentration of melanin can also impede the skin's ability to produce Vitamin D in response to sunlight, especially in regions with low sun exposure, like high-latitude areas.
As early humans migrated from areas near the equator to places with less sun exposure, such as the areas in the Northern Hemisphere, an adaptation occurred, reducing the concentration of melanin in the skin. This allowed the skin to produce more Vitamin D under less sunlight, striking a crucial balance between absorbing sufficient Vitamin D and protecting against ultraviolet radiation.
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HELP FAST PLEASE MEDAL AND FAN!!!!!!!!!!!!!
1. What is the relationship between biotic and abiotic factors?
2. How did each change to the land affect the fish in the pond?
3. What can happen to an animal species if it cannot adapt to changes taking place in its habitat?
4. How would the ecosystem’s carrying capacity for this species change in this case?
5. Why are biologists concerned about ecosystem disruption?
6. If you were conducting this experiment in the “real” world, what could be some possible sources of error in the experiment?,
how is heterotroph omnivore and carnivore related
An ecosystem dominated by lichens, mosses, grasses, and woody plants. It is generally found at high latitudes. It is described as having a marshy surface where mosses, lichens, berries and low shrubs grow with mucky soil and permafrost underneath. what is this ?
Answer:
Tundra
Explanation:
Tundra is a type of biome characterized by low temperature and short growth season and generally found at high latitudes. The soil is solid, frozen and known as permafrost. It forms when the temperature is below -5° celsius. Tree roots are not able to penetrate this frozen soil so only shrubs, grasses, moss and lichens can grow here. Hence, tundra climate is hostile to woody vegetation. In summers when the top layer of permafrost melts, it leaves behind marshy and soggy grounds and bogs. There are three types of tundra: arctic, antarctic and alpine.
1. When does the autumnal equinox occur in the Southern Hemisphere? (1 point)June 21
March 21
September 21
December 21,