Reduced penetrance and variable expressivity are factors that influence the effects of particular genetic changes. These factors usually affect disorders that have an autosomal dominant pattern of inheritance, although they are occasionally seen in disorders with an autosomal recessive inheritance pattern.enetrance refers to the proportion of people with a particular genetic change (such as a mutation in a specific gene) who exhibit signs and symptoms of a genetic disorder. If some people with the mutation do not develop features of the disorder, the condition is said to have reduced (or incomplete) penetrance.
Up to 90 percent of peak bone mass is acquired by age 18 in girls and by age 20 in boys, which makes youth the best time to âinvestâ in oneâs bone health. The amount of bone tissue in the skeleton, known as bone mass, can keep growing until around age 30.
men DO reach their physical peak at age 18 give or take a year or two so i dont understand why you had a problem with that answer..i thought this was common knowledge??? men 18, women late 20's--its always been a topic of discussion as to why the 2 sexes have such a wide gap between their peaks.here is no age for that. It's all over the board. Some men are in the best shape of their life at 40 health wise and physical wise. I'm 19 and the time my body was at my best was 16. So it's all over the place there is no average for all men.