When and where did the first multicellular protists evolve?
A. Canada, 1.4 BYA
B. Middle East, 4.6 BYA
C. Africa, 2.3 BYA
D. Asia, 3.2 BYA
Answer: A
Biology & Microbiology
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Large ears is a rare trait in a mainland population of mice. A female mice homozygous for very large ears arrives at an island that already contains mice after sneaking onto a boat. This will lead to a population with a higher incidence of big ears than the mainland population because of ____
A. increased mutation. B. a bottleneck effect. C. genetic drift. D. natural selection. E. gene flow.
Biology & Microbiology
A(n) __________ dominates bryophyte life cycles. Fill in the blank(s) with the appropriate word(s)
Biology & Microbiology
Endothermy costs energy
a. true b. false
Biology & Microbiology
dental caries are a direct result of
What will be an ideal response?
Biology & Microbiology