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13 September, 03:54

You cross purple-flowered and white-flowered pea plants, and all offspring are purple. how come? select one:

a. none of the answers provided are true

b. the white flower is dominant

c. the genes for purple and white flowers are blended

d. the offspring were heterozygous

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  1. 13 September, 03:57
    0
    To solve this problem on genetic dominance, we will need a punnet square.

    Let's let P represent purple-flowered and p represent white-flowered.

    We have one purple flowered plant with the alleles PP, and we have one white flowered plant with the alleles pp. Using a punnet square, we can determine the alleles of the offspring.

    P P

    p| Pp Pp

    p | Pp Pp

    As we can tell from our punnet square, all of our offspring will have purple flowers. This is because the purple-flower allele is dominant and the white-flowered allele is recessive.

    Since each flower has a dominant and recessive allele, they are heterozygous.

    Therefore, the solution to this problem is D.
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