Despite the fact that it is the result of recessive genes, some carriers of sickle-cell disease possess both normal and sickle-shaped blood cells. This phenomenon is best explained by
a. polygenetic effects.
b. meiosis.
c. incomplete dominance.
d. concordance rate.
Question 2
Tony and Tina are both carriers of the same defective gene for a genetic disorder. As knowledgeable individuals, they know that each time they have a child there is a _____ risk that child will be a carrier for the disorder.
a. 25 percent
b. 50 percent
c. 75 percent
d. 100 percent
Relatively simple changes in Hox genes control limb formation in tetrapods.
Cell division protein FtsN
Prokaryotic Cell Transcription
Cell kill and chemotherapy.
A common autosomal recessive allele can produce a pedigree that looks like an autosomal dominant tra
The frequency of the dominant and recessive alleles in the gametes of the parental generation determ