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In mammals, females are XX while males are XY so a woman should never be able to provide the necessary Y chromosome genes to produce a son.

When the DNA was methylated the chromosome was able to be successfully transplanted into a wild type species of M. capricolum.

You know chromosomes, but this was a molecule, and somehow all the information was probably present in some digital form.

The cell prepares for meiosis just as it does for mitosis. But as the DNA condenses, each chromosome finds its homologous counterpart.

For a few weeks, these chromosomes are all that differentiates male embryos from female embryos.

The reason why the early abortion is often lacking, the performance corpus luteum thyroid performance beneath, chromosome special, etc.

The rapid decline of the Y chromosome seems to have ground to a halt at least tens of millions of years ago.

It is usually inherited as an autosomal dominant trait, although autosomal recessive and X-linked inheritance are seen less commonly.

each member of a pair of homologous chromosomes separates independently of the members of other pairs so the results are random.