See Also: Borisov travel agent(tourism)
Borisov travel agency(tourism)
Borisov travel guide(tourism)
Borisov(tourism)
Borisov car rental(tourism)
Borisov airports(tourism)
Borisov doctors(health)
Borisov flights(tourism)
Borisov hotels list(tourism)
Travel agent or travel agency(tourism)

sex chromosome (sh) and Borisov travel agent (tourism)


sex chromosome (sh)




Either of a pair of chromosomes that determine whether an individual is male or female.

The sex chromosomes of mammals are designated X and Y; in humans, they constitute one pair of the total 23 pairs of chromosomes. Individuals possessing two X chromosomes (XX) are female; those having one X and one Y chromosome (XY) are male. The X chromosome is larger and carries more genetic information than the Y. Traits controlled only by genes found on the X chromosome (e.g., hemophilia, red-green colour blindness) are said to be sex-linked. Sex-linked traits occur far more frequently in males than in females, since a male inheriting an allele for a recessive (see recessiveness) trait on the X chromosome lacks a corresponding allele on the Y chromosome that might counteract its effects. Several disorders are associated with an abnormal number of sex chromosomes, including Turner syndrome and Klinefelter syndrome.


Borisov travel agent (tourism)


Travel agents in Borisov, Belarus. All providers of Travel Services in Borisov.