Scientists have found that 20% of our DNA may come from a mysterious ancestor, according to WP. This discovery changes how we understand human evolution ... in Nature Genetics, points to the ...

For example, the X chromosomes are represented as single, reciprocal syntenic blocks. Human chromosome 20 corresponds entirely to a portion of mouse chromosome 2, with nearly perfect conservation ...

Thus, in her experiments, McClintock observed several fundamental properties of chromosome biology ... the telomeres of this structure contained 20-70 tandem copies of a simple hexanucleotide ...

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.

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 ...

We did not find any evidence for linkage between type 2 diabetes and any other region on chromosome 20. In conclusion, our larger and more comprehensive study showed very strong evidence for a ...