In this diagram, one of the daughter strands has a thymine base that will later be repaired by substituting a cytosine base. If this error had occurred after replication, what kind of mutation would it be?
a. silent mutation
b. transversion substitution
c. transition substitution
d. translocation mutation
c. transition substitution
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Newborn humans face thermoregulatory challenges as do small mammals. One mechanism they use to generate heat is ______ in "brown fat."
A. shivering thermogenesis B. nonshivering thermogenesis C. convection D. evaporation E. radiation
Fossils older than ____ cannot be dated by their 14C content because ____
a. 60,000 years; most of the 14C has decayed by this time b. 12,000 years; half of the 14C has decayed by this time c. 6,000 years; older fossils do not contain carbon d. 2,000 years; most of the 14C has decayed by this time e. 500 years; half of the 14C has decayed by this time
The area where open water fish roam is known as ____
a. the pelagic province b. the intertidal zone c. the neritic zone d. hydrothermal vents e. the benthic province.
_____ is a nonspecific response to tissue injury that protects the host from further damage.
Fill in the blank(s) with the appropriate word(s).