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 ...

At the largest level, whole chromosomes or even whole copies ... rare events and can only be detected on a background of identical DNA. Because biological systems are usually influenced by many ...

Deletions involve the loss of DNA sequences. Phenotypic effects of ... For instance, deletions that span a centromere result in an acentric chromosome that will most likely be lost during cell ...

Lab technicians analyze specific genetic markers in your DNA that are common in certain regions and ethnic backgrounds ... your mother’s ancestral line. Y-chromosome DNA (Y-DNA): Y-DNA tests ...

Telomeres, the protective caps at the ends of our chromosomes, act much like the plastic tips of shoelaces, preventing our DNA from fraying and sustaining its genetic integrity. However ...

And both in the Y chromosome (male) and in the mitochondrial DNA (transmitted by the mother) of Fernando, there are traits compatible with Jewish origin.” Sign up for our free indy100 weekly ...

The research aims to resolve long-standing uncertainty surrounding Columbus' background ... And both in the Y [male] chromosome and in the mitochondrial DNA [from the mother] of Hernando there ...

A chemical in common-use plastics may cause DNA damage and infertility in women, a new Harvard Medical School study shows.

DNA molecules are large and complex. They carry the genetic code that determines the characteristics of a living organism. The backbone of the DNA double helix consists of alternating phosphate ...