Geographic isolates of a particular species that differ from other populations by one or more characteristics are considered to be

A) clines.
B) subspecies.
C) evolutionary "dead ends."
D) ecotypes.


B

Biology & Microbiology

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Suppose a human population exhibits a Type III survival curve. What would you expect to happen to the curve over time if further dramatic improvements in medical technology take place?

What will be an ideal response?

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During which period of a pregnancy do the organ systems of the baby develop?

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There are ______ different alleles for blood type in humans.

A. 3 B. 4 C. 8 D. 12

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Recombination of two genes can occur because of ________________.

a) only independent assortment b) only crossing over c) both independent assortment or crossing over d) mutation

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