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

Question

Responses

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

Answer 1

The correct response is:

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

This statement explains how the reduction of skin pigmentation in migrating human populations away from the equator resulted from the need for adequate vitamin D synthesis in conditions of lower ultraviolet (UV) radiation exposure. Lighter skin allows for more efficient production of vitamin D in environments with less sunlight.

Answer 2

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 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
the correlation between air pollution and black moth predation

the correlation between air pollution and white moth populations

Answer 3

The correct choice that 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 white moth populations.

This correlation is significant because as industrial pollution darkened tree bark, the lighter-colored (white) moths became more visible to predators, leading to a decline in their populations. Conversely, the darker (black) moths had better camouflage and thus experienced increased survival and reproduction rates, resulting in their population increase.

Answer 4

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

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

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.

Answer 5

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 favors individuals with traits that provide a survival or reproductive advantage in a given environment, leading to an increase in the frequency of those advantageous traits in the population over generations.

Answer 6

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

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

build an antibiotic library to match antibiotics to resistant infections.
build an antibiotic library to match antibiotics to resistant infections.

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

build a phage library to match phages to resistant infections.

Answer 7

The most likely future direction for hospitals is to:

build a phage library to match phages to resistant infections.

As bacterial resistance to antibiotics increases, there is growing interest in phage therapy (using bacteriophages to target and kill specific bacteria) as an alternative treatment. Building a library of phages to combat antibiotic-resistant infections could become a key strategy in managing these challenging infections.