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Definitions from WordNet

Definitions from the Web

Sex Chromosome

Noun:

The sex chromosome refers to one of the pair of chromosomes that determine the sex of an individual in many organisms, including humans.

Example sentence:

Only females possess two X sex chromosomes, while males possess one X and one Y sex chromosome.

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Related terms:

• Sex determination
• Chromosomal abnormalities

Sex Determination

Noun:

Sex determination refers to the process by which an organism's sex is established during development, usually dictated by the combination of sex chromosomes inherited from the parents.

Example sentence:

In humans, the presence of a Y sex chromosome leads to the development of male characteristics during sex determination.

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Chromosomal Abnormalities

Noun:

Chromosomal abnormalities refer to any irregularities or changes in the structure or number of chromosomes, which can occur during cell division or as a result of genetic mutations.

Example sentence:

Down syndrome is a common chromosomal abnormality caused by the presence of an extra copy of chromosome 21.

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