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 ...

Scientists also know that the DNA that makes up genes is packed into structures called chromosomes, and that somatic cells contain twice as many chromosomes as gametes (i.e., sperm and egg cells).

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 ...

An article by UAB professor Joan-Ramon Daban analyzes in depth the physical problems associated with DNA packaging that have ...

Save guides, add subjects and pick up where you left off with your BBC account. The nucleus of each human body cell contains 46 chromosomes. Each chromosome contains about 1000 genes. There is ...