The geneticist who discovered the white eye mutation in Drosophila and helped establish that genes are carried on chromosomes was
A. Janssens.
B. Mendel.
C. Morgan.
D. Sturtevant.
E. Sutton.
Answer: C
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Consider the global nitrogen cycle depicted in the figure above. What is the limiting portion of the cycle for plants?
A) industrial nitrogen fixation B) nitrogen lost to the atmosphere C) internal nitrogen cycling in the oceans D) nitrogen fixation by bacteria
What is the environmental lesson from the Easter Island civilization?
What will be an ideal response?
Recombination between the A locus and the B locus = 0.15. This initial value of link-age disequilibrium = 0.20. What will be the value of linkage disequilibrium after one generation of recombination? Show your work
What will be an ideal response?
Select the reasons why adaptive radiations are often observed on remote volcanic islands. Check all that apply.
_____ When a new volcanic island forms, there are many empty niches. _____ Only a few individuals reach remote islands. _____ Remote islands have more plant diversity than the mainland does. _____ Evolution is intrinsically faster on islands than on the mainland.