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task Black body color and scarlet eyes are determined by two-genes recessive alleles, which are located...

task

Black body color and scarlet eyes are determined by two-genes recessive alleles, which are located on different auto-atoms in Drosophila melanogaster. A F1 she crossed from an intersection between the two pervasive tribes, "black body color" and "scarlet eyes", to an F1 male from a cross between the pervasive strains of "black body color" and "black body color with the scarlet-colored eyes".

What phenotypes can you expect from the offspring of this crossing and what are the expected phenotype frequencies?

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Answer #1

black body color,normal eyes = bbEE.

normal color,scarlet eyes = BBee

bbEE x BBee

F1 female = BbEe

black body color,normal eyes = bbEE

blackbody color,scarlet eyes = bbee

bbEE x bbee

F1 male = bbEe.

now F1 female (BbEe) x F1 male (bbEe)

bE be
BE BbEE BbEe
Be BbEe Bbee
bE bbEE bbEe
be bbEe bbee

normal body color,normal eyes = 3, frequency -3/8

normal body color,scarlet eyes = 1, frequency -1/8

black body color,normal eyes = 3, frequency -3/8

black body color,scarlet eyes = 1, frequency -1/8

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