Non–X-Linked Recessive Problems
Some problems represent a non–X-linked recessive trait. Neither parent has the disorder but each has a 50% chance of passing the abnormal gene to the children if both parents carry one abnormal gene and one normal gene. Consequently, each young son or daughter has
A 25% possibility of inheriting two unusual genes (and so of developing the condition)
A 25% possibility of inheriting two normal genes
A 50% potential for inheriting one normal plus one gene that is abnormalhence becoming a provider associated with disorder such as the moms and dads)
Consequently, one of the young kiddies, the opportunity of perhaps perhaps not developing the disorder (that is, being normal or even a carrier) is 75%.
X-linked genes are genes carried on X chromosomes.
Listed here maxims generally connect with principal disorders based on a principal X-linked gene:
Affected males transmit the condition to any or all of these daughters but to none of the sons. (The sons associated with affected male receive his Y chromosome, which will not carry the unusual gene. )