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Curly wing (CY) shape and stubble bristles (SB) are both recessive lethal alleles (i.e. dominant in terms...

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Biology

Curly wing (CY) shape and stubblebristles (SB) are both recessive lethalalleles (i.e. dominant in terms of wing shape/bristles phenotype,but recessive for lethality). What would be the result(F1 phenotypic ratios) of a cross between two curlywinged, stubble bristle flies? To develop a hypothesis to predictthe phenotypic ratio for the F1 generation consider thefollowing:

What are the genotypes of the parents? _________________

What phenotypic ratio would you predict for the offspring of across between two flies with curly wing shape?__________________

and two flies with stubble bristle?__________________

Use a branch diagram to predict theoutcome of dihybrid cross between two curly winged, stubble bristleflies.

Answer & Explanation Solved by verified expert
3.7 Ratings (577 Votes)
Curly wing CY shape and stubble bristles SB are bothrecessive lethal alleles ie dominant in terms of wingshapebristles phenotype but recessive for lethality What wouldbe the result F1phenotypic ratios of a cross betweentwo curly winged stubble bristle    See Answer
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