Genes carried on the sex chromosome are usually transmitted alone with thoses that determine sex.

Such genes are called sex linkage e.g the gene of albinism, haemophilia, sickle cell anaemia etc are carried on sex chromosome of human.

In human the are many more traits link on the “X” chromosome than on the Y trait. This is because the Y chromosome of human does not have the appropriate characteristic for sex linkage

The gene for normal colour is dominant over the gene of albinism. If a normal get marriage to a mal albino all the first generation would be normal. However if the F1 is been self crossed 3 of the F2 will be normal and 1 will be an albino