Each human cell contains 23 pairs of chromosomes that carry DNA within their nucleus. The X and Y chromosomes, commonly referred to as the sex chromosomes, are one such pair.

Thus, in her experiments, McClintock observed several fundamental properties of chromosome biology; specifically, she noticed that cells do not tolerate the presence of unprotected chromosome ends ...

According to Medline Plus, in every cell, humans possess 23 pairs of ... Within the last 166 million years, the human Y ...

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 ...

During meiosis, the cell division process central to sexual reproduction, all chromosomes must figure out where to destroy ...

Specialized protein machines called SMC complexes (Structural Maintenance of Chromosomes) play a critical role in these ...

Many genes may be transferred between chromosomes. Such translocation mutations can cause disorders of growth, development, and function of the body's cells and systems. Human cell nuclei have 23 ...

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 ...

The biological factory that produces reproductive cells has a robust quality control system to identify and eliminate eggs ...

Now that certain human disorders have been linked with chromosome abnormalities, it is desirable to examine large numbers of cells for such abnormalities. A computer regime has been devised for ...

Scientists have discovered a new property of the molecular motors that shape our chromosomes. While six years ago they found that these so-called SMC motor proteins make long loops in our DNA, they ...