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dalvyx [7]
2 years ago
11

In Drosophila, the gene for red eyes, R is dominant to the allele for white eyes , r. This is sex-linked . Determine the possibl

e genotype and phenotype ratios expected from a cross between:

Biology
2 answers:
Paha777 [63]2 years ago
7 0
Nwnemwmeeleosi. Mememek
miv72 [106K]2 years ago
6 0

Answer:

B) XRxr XrY

XRXr,XRY,XrXr,XrY

Genotype ratio:1:1:1:1

Phenotype ratio: 2:2 50% white, 50% red

C) XRXR, XrY

XRXr,XRY,XRXr,XRY

Genotype: 2:2

Phenotype: 100% white

D) XRXR,XRY

XRXR,XRXR,XRY,XRY

Genotype: 2:2

Phenotype: 100% white

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