Which of the lakes in the accompanying figure may experience turnover?
a. 2 and 4
b. 2 and 3
c. 3 and 4
d. 1 and 2
e. 1 and 3
e
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Instantaneous speciation (select all correct choices)
A. is, by definition, a type of sympatric speciation. B. is typically caused when hybridization between species produces fertile, viable offspring that are reproductively isolated from both parental species. C. often involves the multiplication of chromosome sets, or polyploidy. D. is relatively common in plants but not in animals. E. none of these
Fluid that collects in tissues is returned to the bloodstream by the
A. lymphatic system. B. digestive system. C. excretory system. D. endocrine system. E. vascular system.
According to Mendel's law of ________, genes of a gene pair separate from one another during the formation of gametes
Fill in the blank(s) with correct word
How many bases does it take to code for a single amino acid?
A) four B) six C) two D) three E) one