What offspring would you expect from a cross between the female Drosophila described in problem 1 (red eyes and a yellow body, homozygous recessive for the yellow body color allele and homozygous dominant for the eye color allele) and the male described in problem 2 (hemizygous for both the recessive (white) eye color allele and dominant (tan) body color allele?)
A reminder that the alleles for eye color and for body color are on the X chromosome of Drosophila, but not on the Y. Red eye color (w+) is dominant to white eye color (w), and tan body color (y+) is dominant to yellow body color (y).
A. Daughters would be yellow-bodied, red-eyed; the sons would be tan-bodied, white-eyed B. Daughters would be tan-bodied, red-eyed; the sons would be yellow-bodied, white-eyed C. Daughters would be tan-bodied, red-eyed; the sons would be yellow-bodied, red-eyed D. Daughters would be yellow-bodied, white-eyed; the sons would be tan-bodied, white-eyed E. Daughters would be yellow-bodied, red-eyed; the sons would be tan-bodied, red-eyed
http://www.biology.arizona.edu
All contents copyright © 1996. All rights reserved.