Yet another critical cell cycle checkpoint takes place mid-mitosis. This check determines whether the chromosomes in the cell have properly attached to the spindle, or the network of microtubules ...

This video segment from NOVA: "Judgment Day: Intelligent Design on Trial" reveals how genetic evidence helped to confirm an important component of Darwin's theory of evolution by natural selection ...

Thus, in her experiments, McClintock observed several fundamental properties of chromosome biology ... Only one extension cycle is illustrated in this figure, but in reality, telomerase is ...

It met this challenge by devising (again, speaking from a human perspective) a system by which parent cells incorporate genetic information from both of its parents but contain half the amount of DNA.

Defects in this process can lead to cell death or diseases like cancer. A new study has shown how chromosomes change shape during cell division. Certain protein complexes help fold DNA into ...

A mechanosensitive nuclear checkpoint triggers cell cycle arrest after chromosome mis-segregation. Chromosome segregation errors during mitosis, induced for example by centromere dysfunction (the red ...

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 ...

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 ...