下列有关遗传学知识的叙述中，正确的是 A．一种性状只有一种表

下列有关遗传学知识的叙述中，正确的是

A．一种性状只有一种表现型

B．性状数目比染色体数目多很多

C．表现型相同则基因型也相同

D．父母所有的性状都能遗传给子代

答案

【答案】B

【解析】因为生物的性状是由基因控制的，在染色体上的DNA上有许许多多的基因，所以性状的数目比染色体多很多。

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