Which of the following forms a "cointegrate" as part of the transposition mechanism?
A. cut-and-paste transposition
B. replicative transposition
C. bacterial transduction
D. transposition via an mRNA intermediate
E. lysogeny
B
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A marriage between two related individuals, such as first cousins, is called ____________________
Fill in the blank(s) with correct word
There is a population of frogs living in a pond, 25 are green, 25 are brown, 25 are yellow with green spots and 25 are all yellow. A drought occurred and 75% of the frogs died. The remaining frogs were green and brown, after 25 generations the frogs still were green and brown, yellow frogs never appeared in the population again. Which of the following best explains this phenomenon?
A. Sexual selection. B. Balancing selection. C. Bottleneck effect. D. Heterozygote advantage. E. Founder effect.
Biochemical evidence supporting the sliding filament model of muscle contraction includes the observation that
A) myosin light chains can be phosphorylated. B) titin connects each end of a thick filament to a Z line. C) TnC binds Ca2+. D) actin has polymerization ATPase activity. E) myosin has an ATP-dependent crossbridge cycle.
The light-independent reactions of photosynthesis (Calvin cycle) take place in the
A. thylakoids. B. cytoplasm. C. grana. D. stroma.