A species of mouse lives in California. One day 50 of these mice sneak onboard a boat and are taken to an island in the middle of the ocean with no mice on it. These mice find plenty of food to eat on this island and survive to produce fertile offspring even though this population has much less genetic diversity than the populations back in California. Over time on this island, a mutation gives some mice better night vision, and they start to hunt and eat insects that are only active at night and they sleep during the day. Another mutation gives some mice longer claws and they start to eat the seeds that only grow up in the tops of trees Which of the following best describes the evolutionary mechanism influencing this population as it first arrives on the island?

A species of mouse lives in California. One day 50 of these mice sneak onboard a boat and are taken to an island in the middle of the ocean with no mice on it. These mice find plenty of food to eat on this island and survive to produce fertile offspring even though this population has much less genetic diversity than the populations back in California. Over time on this island, a mutation gives some mice better night vision, and they start to hunt and eat insects that are only active at night and they sleep during the day. Another mutation gives some mice longer claws and they start to eat the seeds that only grow up in the tops of trees Which of the following best describes the evolutionary mechanism influencing this population as it first arrives on the island?

Name: A species of mouse lives in California. One day 50 of these mice sneak
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Description: A species of mouse lives in California. One day 50 of these mice sneak onboard a boat and are taken to an island in the middle of the ocean with no mice on it. These mice find plenty of food to eat on this island and survive to produce fertile offspr

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter23: Principles Of Evolution

Section: Chapter Questions

Problem 1CT

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A species of mouse lives in California. One day 50 of these mice sneak onboard a boat and are taken to an island in the middle of the ocean with no mice on it. These mice find plenty of food to eat on this island and survive to produce fertile offspring even though this population has much less genetic diversity than the populations back in California. Over time on this island, a mutation gives some mice better night vision, and they start to hunt and eat insects that are only active at night and they sleep during the day. Another mutation gives some mice longer claws and they start to eat the seeds that only grow up in the tops of trees. Which of the following processes are influencing the allele frequencies of all mice on this island? Group of answer choices Gene Flow and Mutation Selection, Genetic Drift, and Mutation Gene Flow, Mutation, and Selection Selection Gene Flow and Mutation
The English peppered moth has two main colour variations, white and black. Black soot from pollution helped black moths camouflage and blend in with their surroundings. In the 1950s, the populations of white moths began to increase. What can you conclude? Question 3 options: Air pollution decreased Air pollution increased Black moths were forced to adapt and change white to avoid being eaten The white moths developed another mutation that prevented them from finding mates The air pollution killed the birds that ate the moths
How might an evolutionary biologist explain why a species of salamander becomes blind after colonizing a cave? Group of answer choices Members of the ancestral population that colonized the cave differed in their ability to see. If maintaining the ability to see in the cave was a waste of energy, blind salamanders might actually have more offspring than those who could see. It is possible that in the cave there is a source of pollution that increases the mutation rate for a gene that makes salamanders blind. Over time, due to exposure to this chemical, the membersof the population lose their sight. There is no way to explain this in terms of natural selection. The members of this salamander species no longer needed to use their eyes. Over time, due to lack of use, they lost the ability to see.
Imagine a population of mice living in a grey, rocky environment. Some mice are grey and some are brown. If natural selection occurs in this population, what would you expect to see if you returned in 100 mouse generations? Describe what you'd see in terms of fur colors in the population. Imagine a population of mice living in a grey, rocky environment. Some mice are grey and some are brown. If mutations occur in this population, what could you see if you returned in 100 mouse generations, that would tell you mutations had occurred? Describe what you'd see in terms of fur colors in the population, and how it would be different from what you'd see in #2.
A single base change can create devastating genetic disorder or a beneficial adaption, or it might have no effect. How do mutations happen, and how do they influence the future of a species?
Suppose that global warming causes ocean rise that obliterates most of the Gulf Coast of Florida and much of its human population, and that radiation leaking from the destroyed Big Bend Nuclear Power Station causes a mutation that yields green hair in humans with the homozygous recessive mutant allele. Many years pass and a new island appears in the Gulf. This island is then colonized by an intrepid human population that is fixed for the recessive green hair allele. If the island population grows to 10,000 individuals and then an individual who is heterozygous for the green hair locus arrives on the island and mates with one of the residents, how many generations will it take for the dominant, non-green hair allele to reach a frequency of 99%? (Assume viability selection 20% in favour of the non-green allele and ignore the effects of genetic drift).
Suppose that global warming causes ocean rise that obliterates most of the Gulf Coast of Florida and much of its human population, and that radiation leaking from the destroyed Big Bend Nuclear Power Station causes a mutation that yields green hair in humans with the homozygous recessive mutant allele. Many years pass and a new island appears in the Gulf. This island is then colonized by an intrepid human population that is fixed for the recessive green hair allele. If the island population grows to 10,000 individuals and then a new mutation arises once in the population, with a single individual becoming heterozygous for the green hair locus, a) What is the probability that this non-green hair allele will reach fixation by genetic drift? (Assume no selection or additional mutation at this locus). b) What is the average time to fixation of this new non-green allele?
Mutations can be considered one of the raw materials of evolution because they cause mating to remain random. usually cause species to become extinct. contribute to new variations in organisms. are usually beneficial to the organism in which they appear.
How does the founder effect show that Africa is where our species originated? (Hint: Think about genetic diversity.) A. Today, people living in Africa have more genetic diversity than all other people in all other areas of the world. B. Today, people living in Africa have less genetic diversity than all other people in all other areas of the world. C. Today, people living in Africa have the same genetic diversity as all other people in all other areas of the world. D. Today, people living in North America have more genetic diversity than all other people in all other areas of the world.
If this model continues, with no major changes to the environment, what do you expect to happen? A) rabbits will continue to get lighter over time B) there is no way to predict because mutations are random C) mutations will all die out leaving only the original fur color D) dark gray fur will become the common phenotype because it favors survival
Imagine your anthropology professor studies a primate that eats insects. The primate's favorite food is a type of ant. She asks if you are interested in helping her analyze the data. You, of course, say yes! Your professor tells you more about the ants, the primates, and the habitat. Ant color is determined by one gene. There are two alleles for this color gene: the brown allele and the green allele. The primates eat the ants year-round, but your professor knows that the way they eat the ants differs between the rainy season and the dry season. During the rainy season, when there are green leaves on the trees, the primates eat the ants off the green leaves. During the dry season, when the trees lose their leaves, the primates eat the ants off the brown tree branches. Your professor has collected data to investigate if the primate acts as a selective pressure on the ant population, possibly changing the allele frequencies over time.
In the experiment of genetic drift, suppose you have a population of 150 butterflies, but a wildfire devastates the population and only 24 butterflies survive. What percent does the colony decrease by?