Human Anatomy, Physiology, and Medicine. Anything human!
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which one of these is a testcross?
DD X dd
D? x dd
Dd X Dd
D? x D?
- Death Adder
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A testcross is one in which you cross an organism with unknown genotype with an organism of known, homozygous recessive genotype.
Knowing that, you should be able to pick the right answer.
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