X chromosome number causes sex differences in gene expression in adult mouse striatum.
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Thus, these scientists have described a leptotene from the Greek for "thin threads" phase, which is followed sequentially by the zygotene from the Greek for "paired threads"pachytene from the Greek for "thick threads"and diplotene from the Greek for "two threads" phases.
The generally higher expression of X genes in females than males is probably due the incomplete inactivation of one X chromosome each XX cell of the inner cell mass the precursor of the embryo properso the X genes as a group show higher expression in females mostly Class II effects, figure 1.
Description: Their formation depends on the RecA recombination protein homologues that are expressed in this species. Understanding the Sexome To understand the sexome, the aggregate sex-biasing actions that change cellular systems, the following steps are important: