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8 September, 12:00

Shell color in snails is controlled by a single gene locus with two alleles. heterozygous orange-shelled (ss snails are mated to homozygous recessive white-shelled (ss snails. what is the expected genotypic ratio of the offspring?

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  1. 8 September, 14:00
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    Using a punnet square we can compare the parents' genes. I will use the letter s to represent the shell color.

    S s

    s Ss ss

    s Ss ss

    We can now see that there is a fifty fifty chance the offspring will be either color.
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