Sex linked trait?

pls explain me about sex linked trait in easy word


and


if a woman is color blind . what are the chances that her sons will be color blind? if she is married to a man with normal vision, what are the chances that her daughter will be color blind?


pls answer this question and explain why..

Sex linked trait?
Color blindness is a male domninant trait generally passed on by the mother. If the mother is colorblind but the father is not the likelihood that a male child would be colorblind is 50/50. the chances of a female child of the same couple being color blind is if I remember correctly ten times less likely. Most likely the child will inherit the gene, but it will be recessive.
Reply:Traits that are sex linked are recessive traits carried on the X chromosome. Males only have one X chromosome so the either have the trait or they don't have the trait, they cannot be heterozyous or a "carrier" of the trait. Females have two X chromosomes, therefore, they can be homozygous dominant, heterozygous, or homozygous recessive for the trait. The only way they will have the trait is if they are homozygous recessive which means their Mother had to at least be a carrier and their Father must of had the trait. Daughters to be colorblind must get one gene for colorblindness from their Mother and one from their Father. Sons however get a Y chromosome from their father, which doesn't carry the gene. Sons get their only X chromosome from their Mother. If she is a carrier her sons have a 50% chance of being color blind. If she's color blind her sons will be colorblind.