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 ...

In particular, it explains that humans have one fewer chromosome pair in their cells than apes, due to a mutation found in chromosome number 2 that caused two chromosomes to fuse into one.

It’s not clear why these backups have evolved. The new Y chromosome sequences could spell change for metagenomics research, which involves sequencing microbial genomes. Human DNA contaminants often ...

The nucleus of each human body cell contains 46 chromosomes. Each chromosome contains about 1000 genes. There is enough DNA in all the cells in a human body to stretch to the sun and back again ...

The centromeres of human chromosomes are heterochromatic regions ... as platelike structures composed of several layers (Figure 4). In addition, multiple microtubules appear to insert into the ...

As shown in Figure 4, regions on the arms of mouse chromosomes 10 (MMU10), 16 (MMU16), and 17 (MMU17) are syntenic with regions on the long q arm of human chromosome 21. Using some genetic tricks ...

But it might also put us at risk for uniquely human brain disorders. The study appears in Nature. The research focused on parts of chromosomes known as human accelerated regions (HARs), which have ...