sex chromosomes

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Related to Gonosome: allosome

sex chro·mo·somes

the pair of chromosomes responsible for sex determination. In humans and most animals, the sex chromosomes are designated X and Y; females have two X chromosomes, males have one X and one Y chromosome In certain birds, insects, and fish the sex chromosomes are designated Z and W; males have two Z chromosomes, females may have one Z and one W chromosome, or one Z and no W chromosome.
Synonym(s): gonosome

sex chro·mo·somes

(seks krō'mŏ-sōmz)
The pair of chromosomes responsible for sex determination. In humans and most animals, the sex chromosomes are designated X and Y; females have two X chromosomes, males have one X and one Y chromosome.

sex chromosomes

The pair of chromosomes that determines gender. The other 22 pairs of chromosomes are known as autosomes. Women have two sex chromosomes of similar appearance called X chromosomes (XX). Men have one X chromosome and another, much smaller chromosome, called a Y (XY). Sperms have half the normal complement of chromosomes (haploid) and contain either an X or a Y. If an X chromosome effects fertilization the result will be a female, if a Y, a male.

sex chro·mo·somes

(seks krō'mŏ-sōmz)
The pair of chromosomes responsible for sex determination. In humans and most animals, the sex chromosomes are designated X and Y; females have two X chromosomes, males have one X and one Y chromosome.