CAN SOMEONE SOLVE THIS QUESTION #6 a,b, and c. 6. For the fish model organism Me

Question

CAN SOMEONE SOLVE THIS QUESTION #6 a,b, and c.

6. For the fish model organism Medaka (Aplocheilus latipes), genes at 2 color of the fish. Fish that have the dominant allele at both loci (E loci (B, b and R, r) determine brown, fish with a dominant at the B locus (B rr) are blue, fish with a dominant allele at the R locus only (bb R are red, and R) are fish that are homozygous recessive at both loci (bb rr) are white. a. What is the expected phenotypic ratio of offspring of cross between a homozygous brown and homozygous white Medaka fish? b. What is the expected phenotypic ratio of offspring if you then generate an F2 generations progeny above? from the

Explanation / Answer

BBRR X rrbb

brown x white

Possible gametes-BbRr

f1 - BbRr

f2- BbRr X BbRr

Brown(BBRR, BbRr)-9

Blue- (Bbrr,BBrr)-3

Red-(bbRR,bbRr)-3

white-(bbrr)- 1

F2 ratio-

brown : blue: red:white- 9:3:3:1 .

BR Br bR br BR BBRR BBRr BbRR BbRr Br BBRr BBrr BbRr Bbrr bR BbRr BbRr bbRR bbRr br BbRr Bbrr bbRr bbrr

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