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Found Y chromosome 8 times.

Displaying results 1 to 10.

1. Aneuploid (aneuploidy)
Describes a cell or organism which has an abnormal total number of chromosome s and where numbers of individual chromosomes are out of proportion with the numbers of the other chromosomes. Too many chromosomes is called hyperploidy ; too few is called hypoploidy . Aneuploidy is the opposite of euploidy .

2. Autosome
A chromosome not involved in sex determination. The diploid human genome consists of 46 chromosomes, 22 pairs of autosome s, and 1 pair of sex chromosome s (the X and Y chromosomes).

3. Heterogametic sex
The gender which has two different sex chromosome s. For example: In humans, the male is heterogametic because he is XY (has an X chromosome and a Y chromosome ). In birds, the female is heterogametic because she is WZ (has a W chromosome and a Z chromosome ). Compare homogametic sex .

4. Klinefelter syndrome
In humans, a genetically determined condition in which the individual has two X and one Y chromosome. Affected individuals are male and typically tall and infertile.

5. Sex chromosomes
The chromosome s which determine the gender of the organism (for organisms whose gender is determined by gene s rather than by environment). In humans, fruit flies, and other animals where the male is the heterogametic sex , they are the X chromosome s and Y chromosome s. In birds, moths, and other animals where the female is the heterogametic sex, they are the W chromosome s and Z chromosome s. For humans, the sex chromosomes are the 23rd pair of all chromosomes. The sex chromosomes of most plants (when they exist) are also known as X and Y chromosomes; Ginkgo trees have a different system of sex chromosomes. Compare autosome .

6. Sex chromosomes
The chromosomes that determine the sex of an organism. In humans, females have two X chromosomes , and males have one X chromosome and one Y chromosome. Chromosome that determines the gender (sex) of the individual. Human males have a large X and a smaller Y sex chromosomes, while human females have two X sex chromosomes.

7. X chromosome
A sex chromosome found in humans, fruit flies, and certain other animals where the male is the heterogametic sex . In the XY set of sex chromosomes, the female has two X chromosomes and the male has only one (and usually also a Y chromosome ). In plants which use the XY system, this chromosome is female-determining.

8. Y chromosome
A sex chromosome found in humans, fruit flies, and certain other animals where the male is the heterogametic sex . The Y chromosome causes the individual to become male in most mammal species and carries few other gene s besides those dictating sperm development and triggering appropriate hormonal output. It is part of the XY set of sex chromosomes, where the male has only one X chromosome and usually a Y chromosome (fruit fly males can also have just one X and nothing else), and the female has two X chromosomes.

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