Both parents usually imprint the same gene
Indicate whether the statement is true or false
FALSE
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Which of the following is not true of signal integration by more than one transcription factor?
A. It occurs in both bacteria and eukaryotes. B. It allows for multiple environmental signals to control the expression of a single gene. C. It is used to control the expression of genes in opposite orientations that are controlled by the same promoter. D. It can include the use of both repressors and activators at the same promoter.
Insects such as mosquitoes and beetles can beat their wings at tremendous speeds. This can be accomplished because
A. their wing muscle contractions causes another set of muscles to stretch which in turn produces another contraction without waiting for the arrival of a nerve impulse. B. their wing muscle contractions cause another set of muscles to relax which in turn produces another wing movement. C. their wing muscle contractions are stimulated by the continuous nerve signal impulses which produce a continuous contraction of their wing muscles. D. their wing muscle contractions are capable of producing more ATP which allows these insects to have much faster and sustained wing movements. E. their wing muscle contractions produce nerve impulses which lead to more contraction of the wing muscles which in turn permits faster motion of the wings.
After which Period did the last mass extinction
occur?
a. Permian b. Triassic c. Jurassic d. Ordovician e. Cretaceous
The nuclear lamina are disassembled _________.
a) by cytoplasmic microtubules and microfilaments b) as their integrity is disrupted mechanically as holes are torn in the complexes by cytoplasmic dyneins associated with the outer nuclear membrane c) as the interactions between nucleoporin complexes are disrupted and the proteins dissociate into the surrounding medium d) by depolymerization of the lamin filaments e) by cytoplasmic dyneins