A(n) __________ is a group of genes that code for related or identical proteins as a result of gene duplication events
a. ortholog
b. gene family
c. homolog
d. chromosome
e. none of the above
Ans: b
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Refer to the figure. At the beginning of the experiment,
A) side A is hypertonic to side B. B) side A is hypotonic to side B. C) side A is isotonic to side B. D) side A is hypertonic to side B with respect to glucose. E) side A is hypotonic to side B with respect to NaCl.
DNA replication is a complex process, and, as a result, the frequency of error is quite high.
Answer the following statement true (T) or false (F)
Which mutation(s) would not change the remainder of the reading frame of a gene sequence that follows the mutation(s)? View Available Hint(s) Which mutation(s) would not change the remainder of the reading frame of a gene sequence that follows the mutation(s)?
a. One deletion mutation. b. One addition mutation. c. One addition and two deletion mutations. d. One addition and one deletion mutation.
Mutations that improve the survival and reproduction of organisms, and thus contribute to the evolution of species, arise rapidly in prokaryotes due to their
A) cell wall composition. B) anaerobic metabolism. C) absence of a nucleus. D) rapid rate of cell division. E) sexual reproduction.