Several genetic disorders, including Fanconi anemia and ataxia telangiectasia, are caused by mutations in ____
a. the cell wall
b. mitochondrial DNA
c. ribosome structure
d. DNA repair genes
e. DNA polymerase genes
d
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When DNA is replicated, ____
a. parental histones are degraded and entirely replaced by new histones b. DNA is permanently freed from histone binding
c. the histone proteins are also replicated d. only some of the histone proteins are replicated e. the number of histones that bind to each DNA molecule is halved
If a cell begins to divide rapidly (as often seen in wound repair), what would you expect to happen to the G1 phase?
What will be an ideal response?
Iteroparity is common in which of the following organisms?
a. perennial herbaceous plants b. most insects c. agaves d. most invertebrates e. Pacific salmon
Which subatomic particles contribute to the atomic mass for any given element?
(a) protons (b) protons and neutrons (c) neutrons (d) protons and electrons