The following X-linked recessive traits are found in fruit flies:vermilion eyes are recessive to red eyes, miniature wings are recessiveto long wings, and sable body is recessive to gray body. A cross wasmade between wild-type males with red eyes, long wings, and graybodies and females with vermilion eyes, miniature wings, and sablebodies. The heterozygous female offspring from this cross, whichhad red eyes, long wings, and gray bodies, were then crossed tomales with vermilion eyes, miniature wings, and sable bodies. Thefollowing data were obtained for the F2 generation (including bothmales and females):1320 vermilion eyes, miniature wings, sable body1346 red eyes, long wings, gray body102 vermilion eyes, miniature wings, gray body90 red eyes, long wings, sable body42 vermilion eyes, long wings, gray body48 red eyes, miniature wings, sable body2 vermilion eyes, long wings, sable body1 red eyes, miniature wings, gray bodyA. Calculate the map distances separating the three genes.B. Is positive interference occurring?
The following X-linked recessive traits are found in fruit flies:
vermilion eyes are recessive to red eyes, miniature wings are recessive
to long wings, and sable body is recessive to gray body. A cross was
made between wild-type males with red eyes, long wings, and gray
bodies and females with vermilion eyes, miniature wings, and sable
bodies. The heterozygous female offspring from this cross, which
had red eyes, long wings, and gray bodies, were then crossed to
males with vermilion eyes, miniature wings, and sable bodies. The
following data were obtained for the F2 generation (including both
males and females):
1320 vermilion eyes, miniature wings, sable body
1346 red eyes, long wings, gray body
102 vermilion eyes, miniature wings, gray body
90 red eyes, long wings, sable body
42 vermilion eyes, long wings, gray body
48 red eyes, miniature wings, sable body
2 vermilion eyes, long wings, sable body
1 red eyes, miniature wings, gray body
A. Calculate the map distances separating the three genes.
B. Is positive interference occurring?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
