In the cross Aa Bb Cc Dd × Aa Bb Cc Dd, in which all genes undergo independent assortment, what proportion of offspring are expected to be homozygous recessive for all four genes?

Question

zale101 · Answer

because there's four different letter, there has to be four genes separately. Meaning, four different punnet squares

zale101 · Answer

i'll do A for u, and u complete the rest

zale101 · Answer

your question is looking for the percentage of homozygous 
the homozygous in here will be 1/2 because AA and aa is used, homozygous means two same alleles

zale101 · Answer

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