The accompanying illustration shows the F2 phenotypes from a monohybrid cross in snapdragons. What type of
inheritance produces such an outcome?
a. complete dominance
b. incomplete dominance
c. multiple alleles
d. continuous variation
e. epistasis
ANSWER: b
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In Drosophila, the sex of an individual is determined by
A. 1 pair of alleles. B. the number of X chromosomes. C. the number of Y chromosomes. D. 1 pair of autosomes. E. 2 pairs of alleles.
All of the following types of culture media are enriched and selective except:
A) blood agar. B) colistin-nalidixic acid agar. C) phenylethyl alcohol agar D) Thayer-Martin agar.
Explain why transplanted organs are often rejected by their hosts. What will be an ideal response?
In an attempt to control aphids that are destroying his plums, a farmer in Iowa imports a colony of Asian ladybugs that feast on the aphids. The Asian ladybugs are not eaten by the local bird populations
The Asian ladybug population multiplies quickly, displaces the local ladybugs, eliminates the aphids, and begins to eat other local insects. The Asian ladybug A) is responsible for habitat fragmentation in the plum orchard. B) is a threatened species. C) is increasing the biodiversity of the orchard. D) is being overexploited. E) qualifies as an invasive species.