The expected proportion of the progeny that will be h-o-mozy-gous for all of the genes is equal to 9/16.
Assuming independent segregation and complete dominance for each trait, the cross-breeding would be a Penta hybrid cross as shown below:
Penta hybrid cross = AaBbCcDdEE × AaBbCcDdee
Next, we would simplify this Penta hybrid cross by converting to five (5)monohybrid crosses as follows:
Aa × Aa = 1/2 (hm, AA, aa) 1/2 (hetero, Aa).
Bb × Bb = 1/2 (hm), 1/2 (hetero).
Cc × Cc = 1/2 (hm), 1/2 (hetero).
Dd × Dd = 1/2 (hm, AA, aa) 1/2 (hetero, Aa).
EE × ee = 1/2 (hm, AA, aa) 1/2 (hetero, Aa).
Therefore, the expected proportion of the progeny that will be h-o-mozy-gous for all of the genes is equal to 9/16.
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