Mutation is a source of new genetic variation. New genes can only be introduced into the population when individuals reproduce. Considering this, would you expect more variation in a population of mice or elephants, over the same time period, assuming that the populations were the same size? Explain
What will be an ideal response?
Responses should expect mice to have more variation because the generation time is much faster so there is more opportunity for mutations to be introduced into the gene pool. Also, with litters vs. single offspring there are more chances for a mutant to survive.
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Answer the following statement true (T) or false (F)
Field experiments by David Tilman showed that increased plant diversity reduced the occurrence of invasive species.
Answer the following statement true (T) or false (F)
During the second stage of labor:a
the cervix begins to dilate. b. the cervix becomes effaced. c. the fetus is "delivered." d. the uterus begins to contract. e. the amnion breaks.
Cnidarians have what type of skeleton?
A) They don't have a skeleton B) Exoskeleton C) Endoskeleton D) Hydrostatic skeleton