Speciation in snails can be said to be instantaneous because left-handed and right-handed snails cannot mate and coiling direction is:
a. caused by a single gene.
b. affected by ploidy.
c. affected by chromosomal translocations.
d. caused by multiple genes.
A
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In what part of aerobic respiration, is carbon dioxide released?
a. glycolysis b. the Krebs Cycle c. electron transfer phosphorylation d. none of these e. more than one of these
You are looking at sonograms and are observing fetal bones. During a 6-week-old fetus sonogram you observe
A. calcified cartilage in the long bones. B. cartilage in the long bones. C. compact bone in the long bones. D. spongy bone in the long bones. E. a lack of bone structure.
Nearsightedness is also called
a. myopia. b. hyperopia. c. presbyopia. d. none of the above.
A similarity between regulation of the lac operon in bacteria and the regulation of galactose utilization in yeast is that both pathways
A) transcribe all the genes necessary as one polycistronic mRNA. B) use feedback inhibition to stop making their sugars. C) use a modified version of their sugars as inducers. D) are subject to catabolite repression. E) C and D only