下面是培臻教育小編為大家整理的一篇關于BMAT考試:科學知識與應用練習(25)的文章,供大家參考,下面是詳細內容。
BMAT考試:科學知識與應用練習
A woman has a recessive genetic condition butneither of her parents has the condition.
Which one of the following could not be true?
A ?Both herparents are heterozygous for this gene.
B ?Onematernal grandparent and one paternal grandparent have the condition.
C ?Onematernal grandparent and one paternal grandparent are heterozygous for thisgene.
D ?All hergrandparents were carriers of the recessive allele.
E ?Bothparents are homozygous and a mutation occurred in the DNA of a gamete from oneof her parents.
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