What is a chromosome? - Genetics Home Reference - NIH
The short arm of the chromosome is labeled the “p arm.” The long arm of the chromosome is labeled the “q arm.” The location of the centromere on each chromosome gives the chromosome its characteristic shape, and can be used to help describe the location of specific genes.
Chromosome - Wikipedia
Before this happens, every chromosome is copied once , and the copy is joined to the original by a centromere, resulting either in an X-shaped structure (pictured to the right) if the centromere is located in the middle of the
Chromosome | Define Chromosome at Dictionary.com
Chromosome definition, any of several threadlike bodies, consisting of chromatin, that carry the genes in a linear order: the human species has 23 pairs, designated 1 to 22 in order of decreasing size and X and Y for the female and male sex chromosomes respectively.
chromosome | Structure & Function | Britannica.com
In species that reproduce asexually, the chromosome number is the same in all the cells of the organism. Among sexually reproducing organisms, the number of chromosomes in the body (somatic) cells is diploid (2n; a pair of each chromosome), twice the haploid (1n) number found in the sex cells, or gametes.
Chromosome | Definition of Chromosome by Merriam-Webster
Chromosome definition is - any of the rod-shaped or threadlike DNA-containing structures of cellular organisms that are located in the nucleus of eukaryotes, are usually ring-shaped in prokaryotes (such as bacteria), and contain all or most of the genes of the organism; also : the genetic material of a virus. How to use chromosome in a sentence.
Chromosome - definition of chromosome by The Free Dictionary
Wilson Sayres from the University of California, Berkeley said that the Y chromosome has lost 90 percent of the genes it once shared with the X chromosome, and some scientists have speculated that the Y chromosome will disappear in less than 5 million years.
What is a Chromosome?
What is a chromosome? To solve problems that explain and predict traits and variations, we first have to understand cells. All living organisms are composed of cells.
Chromosome - Wikipedia
A chromosome (frae auncient Greek: χρωμόσωμα, chromosoma, chroma means colour, soma means bouk) is a DNA molecule wi pairt or aw o the genetic material o an organism. Maist ...
Chromosome Map - Genes and Disease - NCBI Bookshelf
Chromosome 1 is the largest and is over three times bigger than chromosome 22. The 23rd pair of chromosomes are two special chromosomes, X and Y, that determine our sex. Females have a pair of X chromosomes (46, XX), whereas males have one X and one Y chromosomes (46, XY).
Y chromosome - Wikipedia
The Y chromosome is one of two sex chromosomes in mammals, including humans, and many other animals. The other is the X chromosome. Y is the sex-determining chromosome in many species, since it is the presence or absence of Y that determines the male or female sex of offspring produced in sexual reproduction. In ...