You are studying two linked genes in lizards. You have two females and you know that both are the same genotype, heterozygous for bothgenes (A/a and B/b). You test-cross each female to a male that is fully homozygous recessive for both genes (a/a and b/b) and get the following progeny with the following
phenotypes
Female 1 Female 2
AB - 37 AB - 5
ab - 33 ab - 4
Ab - 4 Ab - 35
aB - 6 aB - 36
How can you explain the drastic difference between these two crosses?
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