In female individuals a late replicating X chromosome which genetically was inactive slightly stained and could be discriminated from the autosomes and other X chromosome.

在雌性个体中，遗传功能失活的晚复制x染色体淡染色，可以和常染色体以及另一条X染色体鉴别。

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Men also possess a female X chromosome that holds clues about the female ancestral line and could tell whether the first Viking invaders brought their families with them or came alone.

男人也拥有女性的X染色体拥有线索女性祖先的路线，可以判断第一海盗入侵者带来了他们的家庭或与他们来的。

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If you receive an X chromosome from your father, the XX pair makes you genetically a female.

CNN: Triple X syndrome