Which of the following is NOT a mechanism of genetic change in populations?
a) genetic drift
b) mutation
c) natural selection
d) biogeography
e) migration
Ans: d) biogeography
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In the simplified prairie food chain illustrated by the pictures below, the letter C represents a ____
a. tertiary consumer b. secondary consumers c. first trophic level d. primary consumers e. third trophic level
Hair is a character shared by all mammals, but not found in their ancestral lineage. Hair is therefore considered to be a(n)
A. shared derived character (trait). B. analogous structure. C. clade. D. shared ancestral character (trait).
Often in complete dominance, the recessive allele codes for a nonfunctional ________
Fill in the blank(s) with correct word
What poisonous gas is present in cigarette smoke that binds to hemoglobin? Why is it dangerous?
What will be an ideal response?