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Updated: Oct 15, 2025
06:24
Establishment of Rat Models Mimicking Gender-affirming Hormone Therapies
Published on: January 10, 2025
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Correction to: Biological sex classification with structural MRI data shows increased misclassification in
Claas Flint1,2, Katharina Förster1, Sophie A Koser1
1Department of Psychiatry, University of Münster, Albert Schweitzer-Campus 1, A9, 48149, Münster, Germany.
Abstract
No abstract available in PubMed .
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The Y chromosome is a sex chromosome found in several vertebrates and mammals, including humans. In addition to 22 pairs of autosomes, the human males have one X chromosome and one Y chromosome. In these organisms, the presence or absence of the Y chromosome determines the development of male traits.
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Around 300 million years ago, the two sex chromosomes diverged from two identical autosomal chromosomes. Over time, the Y chromosome has lost most of its genes, shrinking in size....
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In most organisms, sex is determined by the ratio of X and Y chromosomes. However, in some organisms, such as Drosophila and C.elegans, sex is determined by the ratio of the number of X chromosomes to the number of sets of autosomes. The Y chromosome in Drosophila is active but does not determine sex. It contains genes responsible for the production of sperms in adult flies.
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