PhenoA is a recessive fish fin mutant; \"+\" means the fish appears wild type an

Question

PhenoA is a recessive fish fin mutant; "+" means the fish appears wild type and "-" means the fish has short fins. PhenoA and SSLP1 are markers/genes that are normally maintained in two pure lines, each containing one allele each for the marker and the gene. The lines were crossed, and the F1 grown up. When two F1 fish are crossed, what proportions should we expect in the F2 for the various combinations of SSLP and PhenoA phenotypes? (in order; a zero means we shouldn't see that combination) (Hint: Use a Punnett Square)

3: 6:3:1:2:1

1:1:1:1:1:1

3:3:3:1:1:1

1:2:1:1:2:1

1:2:1:0:0:0

Please explain!

Explanation / Answer

3:3:3:1:1:1

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