What are the three events that occur in sexual reproduction that increase genetic variability?
What will be an ideal response?
Sexual reproduction increases genetic variability through independent assortment in metaphase I of meiosis, crossing over in prophase I of meiosis, and random fertilization.
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The best type of scientist to organize a large amount of genome sequence data would be someone who specializes in _____
A) proteomics B) functional genomics C) evolutionary genomics D) bioinformatics
Pyrrhocoris apterus, or firebug, is native to Europe and China, and eats the seeds of lime trees and mallow trees
What is the most likely explanation for the fact that a native North American species, the fir tree, synthesizes a compound that disrupts development of this European insect? A. The fir tree benefits from this compound because its effect on the firebug decreases competition for resources in its natural environment. B. The fir tree benefits from this compound because its effect on the firebug increases the survival of fir tree offspring. C. The fir tree benefits from this compound because its effect on the firebug increases predation pressure on its competition. D. The fir tree benefits from this compound because its effect on the firebug increases the survival of other, related members of the same species. E. There is likely strong similarity in the hormone receptors of different insects so that a compound made by a tree native to North America has an effect on an insect native to Europe.
Which one of the following is not characteristic of prokaryotic genomes?
A) gene arranged in operons B) distinct replication site C) presence of introns D) may have histone-like proteins associated with the chromatin E) found in the nucleoid
There are 4 pulmonary veins that enter the left atrium
a. true b. false