The pattern of inheritance can be predicted from data if one is given the parent or offspring genotypes or phenotypes. Two organisms, with genotypes BbDD and BBDd , are mated. Assuming independent assortment of the B/b and D/d genes, determine the genotypic ratios in offspring that would occur. (A) 1/2 BBDD, 1/2 bbdd (B) 1/4 BBDD, 1/4 BbDD, 1/4 BBDd, 1/4 BbDd (C) 9/16 BBDD, 3/16 Bb,DD 3/16 BBDd, 1/16 bbdd (D) 1/4 BBDD, 1/2 BbDd, 1/4 bbdd

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23-08-2022
Biology

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The pattern of inheritance can be predicted from data if one is given the parent or offspring genotypes or phenotypes. Two organisms, with genotypes BbDD and BBDd , are mated. Assuming independent assortment of the B/b and D/d genes, determine the genotypic ratios in offspring that would occur. (A) 1/2 BBDD, 1/2 bbdd (B) 1/4 BBDD, 1/4 BbDD, 1/4 BBDd, 1/4 BbDd (C) 9/16 BBDD, 3/16 Bb,DD 3/16 BBDd, 1/16 bbdd (D) 1/4 BBDD, 1/2 BbDd, 1/4 bbdd

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ArpitaK ArpitaK · Answer 1 · 2022-08-31T07:04:29-04:00

The genotypic ratios in offspring that would occur is B 1/4 BBDD, 1/4 BbDD, 1/4 BBDd, 1/4 BbDd .

The given pattern of inheritance shows that, there are two parents with the genotypes BbDD and BBDd which forms the gametes BD, BD, bD, bD and BD, BD, BD, Bd respectively. When these gametes are crossed individually with each other , they give 16 offspring which we get with the help of formation of punett square.

The genotypes that we get after the gamete formation are:

4/16 BBDD, 4/16 BbDD, 4/16 BBDd, 4/16 BbDd which equals to 1/4 BBDD, 1/4 BbDD, 1/4 BBDd, 1/4 BbDd .

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