阿摩線上測驗
18. When crossing an organism that is homozygous recessive for a single trait with a heterozygote, what is the chance of producing an offspring with the homozygous recessive phenotype?
(A) 0%
(B) 25%
(C) 50%
(D) 75%
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統計： A(1), B(1), C(4), D(0), E(0) #3389843
統計： A(1), B(1), C(4), D(0), E(0) #3389843
