[haflingerfriends] Re: Genetic Definitions, part seven: Chromosome & correction for part 5.

" The chromosomes are the rod-like structures that contain the genetic information carried by an individual. They are located in each cell of the body, in the nucleus, which is an area of highly concentrated material. The number of chromosomes in each cell is the same for members of a species, though it differs between species. For ex: humans have 46 chromosomes in each cell, equines have 64 (just reverse the numbers- ha we WERE suppose to be horses weren't we!) The chromosomes are located in the somatic cells (all body cells, the sperm and egg are not body cells). Horses therefore have 32 chromosome pairs. The sperm and egg, aka the sex cells or gametes, contain only one chromosome for each pair. Equine gametes have 32 chromosomes. The sperm and egg unite during conception to form a new individual with 32 pairs of chromosomes (32 from sperm + 32 from egg = 64 chromosomes).
The sex of the offspring (male or female) is determined by the sex chromosomes, which are known as x and y. An individual with both an x and y is male, where a female has two x chromosomes. All the other chromosomes are collectively called autosomal chromosomes or autosomes."

One correction to a mistake I think I made-oops-sorry, but in my heredity post I think I used the word somatic cell, when I ment a gamete cell or just left a peice of the puzzle out. I will post the whole thing corrected here: "If the change occurs in somatic cell(body cell), a change in phenotype may result. This will not be passed on. If the change occurs in a gamete cell (sperm or egg), it can be passed on to the offspring."

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