It involves chromosomal abnormality; w<span>hen the condition is caused by trisomy 21, (down syndrome), the </span>chromosomal abnormality<span> occurs as a random event during the formation of reproductive cells in a parent. The </span>abnormality<span> usually occurs in egg cells, but it occasionally occurs in sperm cells.
I hope this answers your question. =)</span>
4. When beginning a cardiorespiratory training regimen, it's best to plan for _______ sessions per week.
B. two to three
T if you don’t want to exercise then you won’t and you won’t be active right so I believe the answer is true
