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2 October, 17:18

two unknown Pea plants are crossed. 75% for 3/4 of the plants have axial flowers and 25% or 1/4 have terminal flowers. what are the genotypes of the parents?

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  1. 2 October, 17:42
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    Aa x Aa

    Explanation:

    Using axial is dominant (A) and terminal is recessive (a). For a recessive trait to show up at all, both parents must have at least one recessive character.

    You can solve this using a punnett square

    Aa x Aa - > (1) AA (2) Aa (1) aa

    This gives a 3:1 ratio or 75%/25% ratio of axial to terminal flowers
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