Populations that suffer significant reductions in number may experience two population-genetic consequences that together can hasten their decline. Which two processes are likely to act in concert in small populations, and what is their effect?
What will be an ideal response?
The two processes are inbreeding and genetic drift. As populations decrease in size, inbreeding is expected to increase. This in turn may further accelerate population decline by increasing the expression of deleterious recessive alleles, decreasing survivorship or fecundity. Genetic drift leads to further loss of genetic variation, accelerating inbreeding.
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Which substance is most likely an enzyme?
A) proline B) stearic acid C) endopeptidase D) acetylcholine
In eukaryotes, translation takes place
A. on spliceosomes. B. on the plasma membrane. C. on the nuclear membrane. D. on ribosomes. E. inside the nucleus.
The modification of a limb that was used for walking in a preexisting ancestor to one that is used as a wing for a species today is called proteomics.
Answer the following statement true (T) or false (F)
Watson and Crick's model of the structure of DNA was published in:
A) 1975. B) 1949. C) 1961. D) 1923. E) 1953.