Multiple Choice
In fruit flies, red eyes (R) are dominant to sepia eyes (r) , and the presence of wings (A) is dominant to wingless (a) flies. If two flies heterozygous for each trait are crossed (RrAa × RrAa) , how many different phenotypes would be produced in the offspring?
A) 2
B) 3
C) 4
D) 5
E) 9
Correct Answer:
Verified
Correct Answer:
Verified
Q33: Suppose that researchers find a difference in
Q34: Pleiotropic genes _.<br>A)act on secondary sexual characteristics<br>B)influence
Q35: Which genotype(s) can produce type O blood?<br>A)AO<br>B)BO<br>C)OO<br>D)AO
Q36: All of the traits Mendel studied in
Q37: In radishes, red is dominant (RR), white
Q39: Which genotype(s) produce(s) a dominant phenotype?<br>A)aa only<br>B)Aa
Q40: Marfan syndrome is a genetic disorder that
Q41: In cocker spaniels, black coat color (B)
Q42: If all the offspring of a testcross
Q43: Diploid cells have _ copies of each