A mutation (is result) of a definite biochemical (change) in a gene that causes

游客2025-02-09 14

问题 A mutation (is result) of a definite biochemical (change) in a gene that causes the offspring to vary in (some) characteristic (from) the parents.

选项 A、is result
B、change
C、some
D、from

答案 A

解析

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Amutation(isresult)ofadefinitebiochemical(change)inagenethatcauses