Based on this data and your knowledge of natural selection, which explanation best explains the trends seen in the data?

Question

(1 point)
Responses

Individuals within this population of mammoths tend to only mate with individuals that have thick fur.
Individuals within this population of mammoths tend to only mate with individuals that have thick fur.

Individuals with thick fur migrated into the population of mammoths, increasing the proportion of these individuals.
Individuals with thick fur migrated into the population of mammoths, increasing the proportion of these individuals.

This population of mammoths appear to be in Hardy-Weinberg equilibrium since no allele frequencies are changing over time.
This population of mammoths appear to be in Hardy-Weinberg equilibrium since no allele frequencies are changing over time.

Individuals with thicker fur had a survival advantage in the cold environment, allowing these individuals to reproduce more often and create more offspring.

Answer 1

The explanation that best explains the trends seen in the data, based on natural selection, is:

Individuals with thicker fur had a survival advantage in the cold environment, allowing these individuals to reproduce more often and create more offspring.

This option aligns with the principles of natural selection, where advantageous traits (in this case, thicker fur) increase the likelihood of survival and reproduction in a specific environment, leading to a greater frequency of those traits in future generations.

Answer 2

Different species are distinguished by their(1 point)
Responses

diet
diet

physical appearance
physical appearance

size
size

DNA

Answer 3

Different species are distinguished by their DNA.

While diet, physical appearance, and size may vary among species, the most definitive way to distinguish different species is through their genetic makeup (DNA). Genetic differences can reveal evolutionary relationships and help identify distinct species.

Answer 4

3 of 133 of 13 Items

Question
How are transitional fossils evidence to support the process of natural selection?(1 point)
Responses

They show plants and animals that once existed but do not exist now.
They show plants and animals that once existed but do not exist now.

They show intermediate steps in the evolution process.
They show intermediate steps in the evolution process.

They show that most species have not changed over long periods of time.
They show that most species have not changed over long periods of time.

They show that every species of animals developed separately.

Answer 5

The response that best explains how transitional fossils provide evidence to support the process of natural selection is:

They show intermediate steps in the evolution process.

Transitional fossils represent stages in the evolution of species, demonstrating how certain traits developed over time, which supports the idea of gradual change through natural selection.

Answer 6

When Charles Darwin discovered the various finch species on the Galápagos islands, he was surprised to find so many different but related species in such a small geographic area. Which of the following best illustrates the correlation between competitive advantage and an individual’s traits in a particular environment?(1 point)
Responses

Different islands had very different food resources available, and only individuals that were adapted to eat those food resources survived and reproduced on that island.
Different islands had very different food resources available, and only individuals that were adapted to eat those food resources survived and reproduced on that island.

Mating behaviors in finch species ensure that different species of finch will not interbreed with one another.
Mating behaviors in finch species ensure that different species of finch will not interbreed with one another.

Competition between different species for food resources led to resource partitioning of the ecosystem.
Competition between different species for food resources led to resource partitioning of the ecosystem.

Finches had no natural predators on the island before Darwin’s voyage, allowing them to prosper on the islands.

Answer 7

The response that best illustrates the correlation between competitive advantage and an individual’s traits in a particular environment is:

Different islands had very different food resources available, and only individuals that were adapted to eat those food resources survived and reproduced on that island.

This explanation highlights how the specific traits of the finches (such as beak shape and size) evolved in response to the distinct food resources available on different islands, showcasing the role of natural selection in shaping species based on environmental conditions.

Answer 8

How does an individual with a competitive advantage lead to the evolution of an entire species?(1 point)
Responses

Traits that are advantageous help certain individuals reproduce at higher rates, so those traits are more common within the population.
Traits that are advantageous help certain individuals reproduce at higher rates, so those traits are more common within the population.

Individuals that survive due to their competitive advantage are able to expand their range, similar to how the finches radiated out from one common ancestor on the mainland.
Individuals that survive due to their competitive advantage are able to expand their range, similar to how the finches radiated out from one common ancestor on the mainland.

Those who have traits that help them survive are able to reproduce, and their offspring have those traits, leading to a change in the species over time.
Those who have traits that help them survive are able to reproduce, and their offspring have those traits, leading to a change in the species over time.

Some individuals are better at competing for resources, and that allows them to survive droughts or other major ecological events, leading to the extinction of certain species and the survival of others.

Answer 9

The response that best explains how an individual with a competitive advantage leads to the evolution of an entire species is:

Traits that are advantageous help certain individuals reproduce at higher rates, so those traits are more common within the population.

This statement captures the essence of natural selection: advantageous traits increase the likelihood of reproduction, causing those traits to become more prevalent in the population over generations, ultimately leading to evolutionary change within the species.

Answer 10

Sudden blinking when something comes near your eyes is an example of(1 point)
Responses

negative taxis.
negative taxis.

positive taxis.
positive taxis.

reflexive action.
reflexive action.

kinesis.

Answer 11

The sudden blinking when something comes near your eyes is an example of reflexive action.

Reflexive actions are automatic and rapid responses to stimuli that do not require conscious thought, such as blinking in response to an approaching object.

Answer 12

How is antigenic drift beneficial for viruses?(1 point)
Responses

It creates a variety of immune responses in the host organisms.
It creates a variety of immune responses in the host organisms.

It leads to less mRNA which is easier to copy.
It leads to less mRNA which is easier to copy.

It makes them unrecognizable to the immune system.
It makes them unrecognizable to the immune system.

It changes how genes code for antigens.

Answer 13

The response that best explains how antigenic drift is beneficial for viruses is:

It makes them unrecognizable to the immune system.

Antigenic drift refers to small, gradual changes in the viral antigens, which can help the virus evade the host's immune response. This ability to vary makes it more challenging for the immune system to recognize and effectively attack the virus, allowing it to persist and propagate in the host population.

Answer 14

Question
What factors caused the correlation between the reduction in skin pigmentation in humans and migration of human populations away from the equator?(1 point)
Responses

The exposure of human populations to predators only common to the polar regions caused them to adapt by camouflaging better with the environment.
The exposure of human populations to predators only common to the polar regions caused them to adapt by camouflaging better with the environment.

The exposure of human populations to new diseases common to the polar regions interfered with melanin production causing lighter skin.
The exposure of human populations to new diseases common to the polar regions interfered with melanin production causing lighter skin.

The exposure of human populations to less UV light required a reduction in melanin to produce more vitamin D for healthier bones.
The exposure of human populations to less UV light required a reduction in melanin to produce more vitamin D for healthier bones.

The exposure of human populations to new sources of food common to the polar regions caused changes in physiology that resulted in the production of less melanin.

Answer 15

The response that best explains the correlation between the reduction in skin pigmentation in humans and migration of human populations away from the equator is:

The exposure of human populations to less UV light required a reduction in melanin to produce more vitamin D for healthier bones.

As populations moved away from the equator, they experienced lower levels of ultraviolet (UV) radiation. Reduced melanin production in the skin allowed for more efficient synthesis of vitamin D in these lower UV environments, which is essential for bone health and overall health.

Answer 16

Which choice correctly identifies a positive correlation regarding the increase in black peppered moth populations in England during the late 1800s?(1 point)
Responses

the correlation between air pollution and white moth populations
the correlation between air pollution and white moth populations

the correlation between air pollution and white moth predation
the correlation between air pollution and white moth predation

the correlation between black moth populations and predation of black moths
the correlation between black moth populations and predation of black moths

the correlation between air pollution and black moth predation

Answer 17

The choice that correctly identifies a positive correlation regarding the increase in black peppered moth populations in England during the late 1800s is:

the correlation between air pollution and black moth predation.

This correlation highlights how increased air pollution (which darkened trees and other surfaces) provided better camouflage for the darker black moths against predators, leading to a higher survival rate and consequently an increase in their population.

Answer 18

Which statement is accurate about natural selection?(1 point)
Responses

It is a biological process that allows a population to have a competitive advantage in many environments.
It is a biological process that allows a population to have a competitive advantage in many environments.

It is a biological process that prevents species from adapting to significant changes in their environments.
It is a biological process that prevents species from adapting to significant changes in their environments.

It is a biological process that leads a population to have a widespread expression of an advantageous trait.
It is a biological process that leads a population to have a widespread expression of an advantageous trait.

It is a biological process that causes certain traits to be expressed less with each subsequent generation.

Answer 19

The accurate statement about natural selection is:

It is a biological process that leads a population to have a widespread expression of an advantageous trait.

Natural selection results in the differential survival and reproduction of individuals based on their advantageous traits, leading to those traits becoming more common in the population over generations.

Answer 20

In the future, it is likely that hospitals will(1 point)
Responses

build a phage library to match phages to resistant infections.
build a phage library to match phages to resistant infections.

phase out the use of phages.
phase out the use of phages.

phase out the use of antibiotics.
phase out the use of antibiotics.

build an antibiotic library to match antibiotics to resistant infections.

Answer 21

The most likely future trend for hospitals is to:

build a phage library to match phages to resistant infections.

As antibiotic resistance becomes a more significant public health challenge, using bacteriophages (phages) as an alternative treatment for bacterial infections is gaining attention. A phage library would allow hospitals to identify and use specific phages that target resistant bacterial strains effectively.

Answer 22

Based on the Grant research presented in the original passage and your responses to previous questions, select the graph that best represents the change in average beak size from before 1977 to after 1983.(1 point)
Responses

Answer 23

It seems like you're asking for a visual representation (a graph) of data related to the changes in average beak size of finches based on Grant's research. However, I don't have access to the actual graphs or visuals in the original passage you're referring to.

In general, if Grant's research showed that average beak size increased after 1977 and persisted at that higher rate after 1983 due to natural selection acting on fluctuating environmental conditions (like droughts affecting seed availability), you would be looking for a graph that shows a shift upwards in average beak size after those years.

If you're able to provide descriptions of the graphs, I could help you determine which one matches that expected trend!

Answer 24

The graph shows the distribution of plant heights in an original population and also in the population after natural selection.

The plant population grew in an area with high winds and many organisms that feed short vegetation. Which statement best explains the change in plant population after selection?

(1 point)
Responses

Ground-feeding organisms favored short plants, resulting in a taller plant population overall.
Ground-feeding organisms favored short plants, resulting in a taller plant population overall.

Medium-height plants were favored by conditions that harmed tall and short plants.
Medium-height plants were favored by conditions that harmed tall and short plants.

Plants with narrow stems were more likely to survive than plants with wide stems.
Plants with narrow stems were more likely to survive than plants with wide stems.

High winds reduced the survival rate of tall plants, resulting in a greater range of plant heights.

Answer 25

The statement that best explains the change in plant population after selection, given that the plants are in an area with high winds and organisms that feed on short vegetation, is:

High winds reduced the survival rate of tall plants, resulting in a greater range of plant heights.

This statement accurately reflects how high winds could negatively impact taller plants (which may be more susceptible to being blown over), leading to a relative increase in the survival and establishment of shorter plants, while also allowing for a range of heights to persist in the population.