The X chromosome carries at least 150 genes linked to intelligence. Since the mother has two X chromosomes to pass along while the father only has one, the mother’s contribution to the child’s ...

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.

How could this trait be explained? And did this fly disprove the basic premise of the chromosome theory? In the Morgan lab's search to make sense of the white-eyed female, Lilian Vaughn Morgan ...

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 ...

it is highly condensed and wrapped around histones in order to fit inside of the nucleus and take part in the formation of chromosomes. Histones are basic proteins, and their positive charges ...

"Given the fact that the X chromosome is enriched for brain-related genes, it became very important for us to know what roles it might be playing in brain aging," said Samira Abdulai-Saiku, Ph.D ...

"Basic discoveries like the one we describe in this paper are allowing us to slowly peel away the layers of silencing on the X chromosome, which locks in the suppressed state of X. Knowing what we ...