1)Red-green color blindness is a sex-linked recessive trait inhumans. Two people with normal color vision have a color-blind son.What are the genotypes of the parents?
A)XnXn and XnY
B)XNXN and XNY
C)XNXn and XNY
D)XNXN and XnY
2)A poison interferes with the action of RNA polymerase II, butnot RNA polymerase I or III. Which of the following is likely to betrue of a cell exposed to the poison?
A)production of tRNA would be stopped but not rRNA or mRNA.
B)production of mRNA would be stopped but not rRNA or tRNA.
C)A cell could perform transcription but not translation
D)The cell would ignore the G1 checkpoint and eventually becomecancerous.
