April 6 (UPI) --Boys face a greater risk of respiratory problems, including asthma, later in life because they have only one gender-based X chromosome, according to a study, leading to possible ...

DEAR DR. DONOHUE: Our granddaughter is 8 years old and small for her age. She has been tested for a number of things, but all tests have come back without indicating what could be wrong. She is ...

Sex chromosomes, chromosomes responsible for determining if a mammal is male or female, may have evolved to reduce “sexual ...

How does the CRISPR Down Syndrome breakthrough work to remove the extra chromosome 21? We are closer than ever to a world ...

When You've Doubled Your Genes, What's One Chromosome More Or Less? How Polyploidy And Genomic Change Can Lead To Evolutionary Change Date: September 15, 2009 ...

Chromosome 19 has the highest gene density of all human chromosomes, more than double the genome-wide average. The large clustered gene families, corresponding high G + C content, CpG islands and ...

As illustrated in Table 1, the somatic cells from Type A males had one less chromosome than the somatic cells of females of the same species. In the Type B species, however, the chromosome number ...

Human biological sex is determined by the sex chromosomes X and Y. In most cases, females possess two X chromosomes, while males have one X and one Y. However, there is some evidence that the Y ...

Social media rages as Olympic boxer deemed to have male chromosomes wins fight in less than 1 minute Khelif was deemed to have male chromosomes by the IBA. By Ryan Gaydos Fox News.

The Y chromosome can disappear over time in human males, which may introduce a number of health problems. While the exact trigger for such degeneration is unknown, environmental factors can play a ...

Trisomy 18, also known as Edwards syndrome, is a chromosome disorder that often results in stillbirth or the early death of an infant.