The sex chromosome in humans that make an individual a male are __________.
A. a and b
B. X and X
C. A and B
D. X and Y
D. X and Y
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A ________ is a piece of extrachromosomal DNA that has its own replication origin.
Fill in the blank(s) with the appropriate word(s).
Briefly describe the functions of the kidney, ureters, bladder, and urethra in the adult male pig.
What will be an ideal response?
A map distance of 23.6 between two genes indicates which of the following?
A. The genes are 23.6 millimeters apart B. There are 23.6 other genes between the two genes of interest C. 23.6% of the offspring exhibit recombination between the two genes D. 23.6% of the offspring do not survive
For a repressible operon to be transcribed, which of the following must occur?
A) A corepressor must be present. B) RNA polymerase and the active repressor must be present. C) RNA polymerase must bind to the promoter, and the repressor must be inactive. D) RNA polymerase must not occupy the promoter, and the repressor must be inactive.