What is the general generic mechanism for insect resistance to pesticides?
What will be an ideal response?
It is selection at a microevolutionary time scale. Only a few insect resistant individuals have to be
present, or migrate into a population for the resistant genes to spread through a population. Soon, the
resistant individuals will be more common in the population and the evolution of the resistant trait will
spread quickly.
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The phenomenon in which one region of the body grows faster than another among different species is called
A. paedomorphosis. B. Gremlin and BMP4 interaction. C. Hox gene clustering. D. phenotypic variation. E. heterochrony.
The per capita growth rate (r) is ____ per mouse per month in a population of 1,000 mice where 500 mice are born
and 400 mice die monthly. a. 0.1 b. 0.2 c. 0.3 d. 0.4 e. 0.5
Prokaryotic operons typically include a(n) ________ and a(n) ________ with multiple genes
A) operator; terminator B) operator; promoter C) promoter; repressor D) inducer; repressor E) CAP-binding site; inducer
Spiegelman and colleagues demonstrated natural selection in RNA replications because in their experiments:
a. RNA molecules had differential survival and replication rates. b. RNA was self-replicating. c. the researchers chose which RNA molecules to replicate. d. RNA was copied into DNA.