It is true but you dont have to be perfect in every detension in order to be healthy or well.
A) Due to the joining of the two gametes (sperm cell and egg which both have 23 chromosomes, the fertilised egg has 46 chromosomes) and because a skin cell is a normal cell (not a sex cell) it has 46 chromosomes.
You can automatically eliminate choice B because a zygote is the name for the cell produced when a sperm cell and egg joins, meaning it now has both 23 chromosomes from each of the sex cells, meaning it has 46 chromosomes. Sperm cells only ever have 23 chromosomes.
The answer is yes it can be donated.
and im not sure about the second one
Answer:
How to calculate lean body mass. ... Measure your body weight. Multiply your body weight by the fat percentage. Subtract the result from your body weight.
Explanation: