Portuguese water dogs have evolved to spend a lot of time in water and thus have webbed
feet. What process does not occur in these dogs but does occur in other dogs that do not have
webbed feet?
a. apoptosis
b. mitosis
c. cell differentiation
d. signaling pathways
A
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Which of the following adversely affects the ozone layer?
A. chlorofluorocarbons B. greenhouse gases C. oil D. coal and natural gas E. plastics
DTC genetic tests are (select all that apply):
A. regulated by the federal government. B. based on stringent scientific evidence for the relationship between particular genes and disease. C. accompanied by consultation with medical professionals who help consumers understand the results of their tests. D. problematic because the link between genotype and risk may be exaggerated for marketing purposes. E. None of the above.
Most basidiomycetes are autotrophs that decompose plant debris, especially cellulose and lignin.
Answer the following statement true (T) or false (F)
Geographically isolated subpopulations of a species can evolve partial reproductive isolation in allopatry
If both subpopulations come into secondary contact, they can either fuse into one mixed population, or, dur-ing a process called reinforcement, selection will lead to greater reproductive isolation. The latter will occur if mating with individuals from the other subpopulation reduces an individual's fitness, as the resulting hybrid offspring has lower fitness. Could cultural evolution play a role in reinforcement? a. Yes, if traits that affect reproductive isolation can be culturally transmitted. b. Yes, but only if there is zero cultural transmission between subpopulations. c. No, in order to form separate species, the changes have to be genetic. d. No, culturally transmitted behavioral traits are bound to be "leaky" (allow for some level of gene flow).