Assume that four polygenic gene pairs are involved in determining phenotypes of F2. How many phenotypic classes are expected?
A) 8 B) 9 C) 16 D) 4
Answer: B
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Although artificial selection may seem slow and unreliable, ____________________ observed that after only a few generations, breeders produced many varieties of pigeons and minks
Fill in the blank(s) with correct word
Homoplasies are useful characters for phylogenetic analyses
a. True b. False
The binding of a neurotransmitter to ligand-gated K+ channels will cause ____ in the postsynaptic
membrane.
a. depolarization b. hyperpolarization c. repolarization d. apolarization e. depolarization and repolarization
Prior to genetic engineering, insulin for humans with insulin-dependent diabetes was extracted from pigs and cattle. Presently insulin is produced by transgenic
A) humans. B) chickens. C) viruses. D) bacteria. E) monkeys.