A hypothetical organism has 100 traits, each of which is determined by a single locus. Each of the organism's 100 corresponding loci impacts only a single trait
Do you think that in such an organism the chance of fixing a late-acting beneficial mutation would differ from the chance of fixing an early-acting beneficial mutation?
a. Yes, the strength of selection on early-acting mutations is less than the strength of selection on late-acting mutations.
b. No, in the absence of pleiotropic interactions, early-acting mutations cannot have negative ef-fects on late-acting mutations.
c. Yes, the mutation accumulation hypothesis and the antagonistic pleiotropy hypothesis are most likely not mutually exclusive.
d. It depends on whether the mutation accumulation hypothesis or the antagonistic pleiotropy hypothesis applies to senescence in this organism.
C
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lineages of identical genetic makeup become structurally and functionally different from one another according to the genetically controlled developmental program of the species?
a. cleavage b. differentiation c. blastula formation d. metamorphosis e. ovulation
__________ lengthen stems, break dormancy in seeds and buds, and stimulate flowering. Fill in the blank(s) with the appropriate word(s)
Viruses can be classified based on their:
a. Physical and chemical properties b. Method of entry c. Method of release d. Color e. None of the answers are correct
All of the following are part of a plant's shoot system EXCEPT
A) flowers. B) mycorrhizae. C) leaves. D) buds. E) stem.