Genes or “loci” are regions of DNA, but not the DNA sequence in that region.
If a woman, for example, has a certain trait that is on one of her X chromosomes (an “X-linked trait), there is a 50% chance that she will be passed on to either her son or daughter. If a son inherits a trait, he will always express it because he only has one X chromosome. If a daughter inherits a trait, she expresses it or not, based on the normal rules of allelic dominance. This is where generational skipping comes in.
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