A gene pool is
A. all the genes in a population.
B. the genes that are unique to a species.
C. a group of species that look alike but are not located in the same area at the same time.
D. all the similar genes in a gene family.
E. a swimming hole for geneticists.
Answer: A
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Based on the tree shown above, the sister group to small tree finches would be:
A. the group consisting of large and medium tree finches. B. large tree finches. C. medium tree finches. D. woodpecker finches. E. the group consisting of woodpecker and mangrove finches.
Humans belong to all of the following groups EXCEPT ______.
a) chordates b) mammals c) eutherians d) tetrapods e) humans belong to all these groups
Which of the following conditions in humans is linked to bovine spongiform encephalopathy?
a. Variant Creutzfeldt-Jakob disease b. Kuru c. Gerstmann-Straussler-Scheinker syndrome d. Fatal familial insomnia
Two species regularly come into contact and form hybrids that have higher fitness than either of the parental species. What are some likely consequences of regular hybridization between these species? Check all that apply.A) Evolution of a third speciesB) Reinforcement of prezygotic isolating mechanismsC) Extinction of one or both of the parental speciesD) Increased gene flow between the parental speciesE) Complete reproductive isolation of the two original species
What will be an ideal response?