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 ...

and he denoted these categories Type A and Type B (Table 1). Table 1: Chromosome Counts in the Somatic Cells of Several Type A and Type B Species As illustrated in Table 1, the somatic cells from ...

Each of the 23 chromosome types has a unique banding pattern. (A chromosome pair has identical banding.) In fact, scientists can identify a chromosome based solely on its banding pattern.

If the cells didn't have half, a fertilized egg would contain 92 chromosomes and be untenable. Meiosis, a type of cell division specific to reproduction, avoids this by halving the number of ...

One group of three chromosomes, called group D, was examined in more detail. Drets and Shaw wanted to determine whether the number of types of G-banding patterns was the same as the number of ...

Researchers at the Crick have uncovered which genes on the Y chromosome regulate the development of sperm and impact ...