Men tend to lose the Y chromosome from their cells as they age. But because the Y bears few genes other than for male ...

Subscribe to our newsletter for the latest sci-tech news updates. Sex determination is a cornerstone of biology, yet many mysteries remain about how sex chromosomes evolve, especially outside familiar ...

Robertsonian chromosomes (ROB) are a type of structurally variant chromosome that is created when two chromosomes fuse together to form an unusual bond. Found commonly in nature, these chromosomes are ...

Since ancient times, scientists and philosophers have pondered the fundamental question of what makes some organisms male and some female. Some hypotheses were at least plausible—Greek philosopher ...

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The evolution of sex chromosomes influences reproductive biology and genome evolution across species. In Drosophila pseudoobscura, the Y chromosome has a distinct origin compared to Drosophila ...

The Y chromosome is inherited only through the paternal line. Sons receive their Y chromosome exclusively from their father.

Ferns, defined by large genomes, high chromosome counts, and pervasive aneuploidy as well as intraspecific polyploid complexity, diverge significantly from the classical genetic theories and ...

Chromosomes and heredity: The nature of the gene, by M. Demerec. Chromosome structure, by C. W. Metz. The sex chromosomes: heteropycnosis and its bearing on some general questions of chromosome ...