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 ...

Chances are you've seen an illustration of DNA's double-helix structure ... Within the rest of the genome are an estimated 70,000 genes. The single chromosome displayed here and those on the ...

It is thought that these proteins play a role in preventing recombination during DNA replication when it is not needed. An alternate hypothesis proposes that homologous chromosomes reside in pairs ...

But what happens when a mutation occurs over multiple genes? Deletions involve the loss of DNA sequences ... span a centromere result in an acentric chromosome that will most likely be lost ...

A 2017 study published in the journal PLOS Genetics said the chromosome's evolution of palindromes — DNA sequences that read the same forward as backward — and repetitive copies of genes could ...

Transposons, or "jumping genes ... with linear DNA, with applications in biotechnology and drug development. In a paper published in Science, researchers show that transposons can target and insert ...

The silencing of the one X chromosome in XX cells is mediated by XIST, a long noncoding RNA that is randomly transcribed from only one X early in development. It coats the DNA and shuts down gene ...

Each cell with a nucleus contains chromosomes, which are made from DNA Human body cells each contain 23 pairs of chromosomes, half of which are from each parent. So, human gametes (eggs and sperm ...

Chances are you've seen an illustration of DNA's double-helix structure and even pictures of the chromosomes that comprise the human genome. But where and how does the famous double helix fit into ...

Genes exist in most cells. Inside a cell is a long strand of the chemical DNA (deoxyribonucleic acid). A DNA sequence is a specific lineup of chemical base pairs along its strand. The part of DNA ...