Emma asked in Science & MathematicsBiology · 3 weeks ago

Biology genetics help?

What is the correct designation for predicting a cross between two heterozygous organisms?

Multiple Choice

1) AABB X AABB

2) AaBB X AaBB

3) AABb X AABb

4) AaBb X AaBb

1 Answer

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  • 3 weeks ago

    Bad question.

    Here is a cross in which the organisms are heterozygous for the A locus:

    2) AaBB X AaBB

    Here is a cross in which the organisms are heterozygous for the B locus:

    3) AABb X AABb

    and here is a "dihybrid cross" in which the organisms are heterozygous for both loci:

    4) AaBb X AaBb

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