In the following breeding scheme, what is the probability of obtaining genotype RrYyTtss in the F2?                         P          RRYYTTSS   x          rryyttss                         F1        RrYyTtSs        x          RrYyTtSs                         F2

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Biology

In the following breeding scheme, what is the probability ofobtaining genotype RrYyTtss in the F2?

                       P         RRYYTTSS  x         rryyttss

                       F1       RrYyTtSs       x         RrYyTtSs

                       F2

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Rr × Rr                        Yy × Yy                       Tt ×Tt                               Ss × Ss

1RR:2Rr: 1rr           1YY:2Yy:1yy                   1TT:2Tt:1tt                    1SS:2Ss:1ss

2/4 Rr                            2/4 Yy            2/4 Tt                         1/4ss

Probability of obtaining individual with Rr and Yy and Tt and ss

2/4 × 2/4×   2/4 × ¼= 8/256= 1/32

Therefore, the probability of obtaining genotype RrYyTtss in the F2 is 1/32

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