Recent studies of gene function as it relates to reproductive development suggest that angiosperms
evolved most directly from:a.
cycads.
b. lycopods.
c. gnetophytes.
d. ginkgos.
e. conifers
E
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Explain how, when improper base pairing escapes repair by the proofreading system, cells are able to detect and repair mutations
What will be an ideal response?
An allele that is dominant in one sex but recessive in the other is
A) X-linked. B) sex-limited. C) sex-influenced. D) Y-linked.
Many alleles cause phenylketonuria (PKU). A unique mutation found only in Yemenite Jews is probably
A) more ancient than other PKU mutations. B) a result of genetic drift. C) due to a strong heterozygote advantage. D) identical to the original allele.
An advantage that multicellular organisms have over one-celled organisms is that cells in multicellular organisms
A. are larger. B. reproduce sexually. C. can specialize. D. are slower moving.