Question

Darwin and Wallace both realized that most species produce many more offspring than is necessary to maintain a constant population. What is the fate of the excess individuals? a. They have evolved so that they cannot survive in their environment. b. Some less favorable individuals do not survive to reproduce. c. They evolve to take advantage of natural resources. d. Some individuals die arbitrarily. e. They mutate and then are able to adapt to new environments. Which of the following statements is true? a. A long-distance runner will produce sperm with good genes for running because their bodies are in such good physical condition. b. Exercise can have an effect on genes. c. What a person does during their life can have no effect on their genetic makeup other than random genetic changes from exposure to chemicals or radiation. d. Cutting the tails off mice for 100 generations will result in a strain of mice with genes for short tails. e. People who are healthy tend to have healthier DNA. Natural selection is best described as: a. Generating new traits that better suit the species. b. Increasing the perfection of a species. c. Working on existing variation of traits to favor those better suited to the organism's environment. d. Causing the death of a significant proportion of the population. e. Driving the species toward an eventual endpoint sometime in the future. That whales have pelvic (hip) bones indicates: a. They probably evolved from fish. b. Ancestral whales had legs. c. Whales should have legs. d. Having a pelvis is advantageous. e. Whales did not evolve by natural selection.

Darwin and Wallace both realized that most species produce many more offspring than is necessary to maintain a constant population. What is the fate of the excess individuals?
a. They have evolved so that they cannot survive in their environment.
b. Some less favorable individuals do not survive to reproduce.
c. They evolve to take advantage of natural resources.
d. Some individuals die arbitrarily.
e. They mutate and then are able to adapt to new environments.

Which of the following statements is true?
a. A long-distance runner will produce sperm with good genes for running because their bodies are in such good physical condition.
b. Exercise can have an effect on genes.
c. What a person does during their life can have no effect on their genetic makeup other than random genetic changes from exposure to chemicals or radiation.
d. Cutting the tails off mice for 100 generations will result in a strain of mice with genes for short tails.
e. People who are healthy tend to have healthier DNA.

Natural selection is best described as:
a. Generating new traits that better suit the species.
b. Increasing the perfection of a species.
c. Working on existing variation of traits to favor those better suited to the organism's environment.
d. Causing the death of a significant proportion of the population.
e. Driving the species toward an eventual endpoint sometime in the future.

That whales have pelvic (hip) bones indicates:
a. They probably evolved from fish.
b. Ancestral whales had legs.
c. Whales should have legs.
d. Having a pelvis is advantageous.
e. Whales did not evolve by natural selection.

Added by Salvador T.

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