Place the steps in the pathway of the G protein cycle in the proper order
What will be an ideal response?
A polar regulatory molecule binds to its receptor
The alpha subunit of G protein releases GDP and binds GTP
The alpha subunit dissociates from the beta-gamma subunits
Either the alpha subunit or the beta gamma complex moves through the plasma membrane and binds to the effector protein
The alpha subunit splits GTP and re-associates with beta gamma
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A gene that affects three traits is _____
a. epistatic b. a multiple allele system c. pleiotropic d. dominant
The punnet square is a useful tool for
A) determining the rate of segregation of alleles.
B) calculating how many mutations occur during DNA replication.
C) determining which genes or traits assort independently during gamete formation.
D) predicting the ratios of possible genotypes of a particular combination of alleles.
E) predicting the level of crossing over that will occur during meiosis.
A food chain always begins with
A. sympathetic decomposers. B. photosynthetic autotrophs. C. pathetic instructors. D. heterotrophic consumers.
Which of these is not a type of noncoding human DNA?
A. repeated sequences B. multigene families C. structural DNA D. highly condensed DNA close to centromeres and telomeres