Question

Question 1(Multiple Choice Worth 3 points)
(04.01 LC)

What type of variation is necessary for natural selection to occur?

Artificial variation
Environmental variation
Genetic variation
Neutral variation
Question 2(Multiple Choice Worth 3 points)
(04.04 MC)

Scientists are studying two populations of the same species of sea turtle. One population is quite small, with only 18 individuals, and the other is much larger, with 147 individuals. If a genetic factor such as a mutation were introduced to both populations at the same time, what could scientists predict about the impact?

Genetic factors would impact the smaller population more because it has less genetic diversity.
Genetic factors would impact the larger population more because it has less genetic diversity.
Genetic factors would impact both populations equally because the sea turtles are the same species.
Genetic factors would play a limited role in the two populations because they are separate from each other.
Question 3(Multiple Choice Worth 3 points)
(04.01 MC)

The shells of some marine snails are highly variable, with some snail shells being solid colors and others having stripes. Predation by birds is a major source of mortality for the snails. Scientists studying these snails found that while 47 percent of the snail population was striped, 56 percent of the snails eaten by birds were striped. What could scientists conclude about the snails?

The shell pattern is due to artificial variation.
The shell pattern is due to environmental variation.
Striped shell snails will eventually take over the population.
Solid shell snail genes will increase in the population.

Answers

GPT-4o mini
Here are the answers to your questions:

**Question 1**: What type of variation is necessary for natural selection to occur?
- **Answer**: Genetic variation

**Question 2**: If a genetic factor such as a mutation were introduced to both populations at the same time, what could scientists predict about the impact?
- **Answer**: Genetic factors would impact the smaller population more because it has less genetic diversity.

**Question 3**: What could scientists conclude about the snails with different shell patterns?
- **Answer**: Solid shell snail genes will increase in the population.

These answers reflect the principles of evolution and natural selection. If you have any more questions or need further clarification, feel free to ask!