Answer:
3 because the muscle cells is produced
<span>undergo a dramatic decline in size, possibly to a stable level at or below 1,800 individuals.</span>
This is referring to meiosis, which happens just once to make reproductive cells, unlike mitosis which is just simple copying.
In mitosis, one cell splits into two, but the number of chromosomes doesn't change. The original cell makes two copies of its chromosomes and divides them up.

In <em>meiosis</em>, however, our cell doesn't bother making those two copies. It just takes what it has and divides it between two new cells.
The correct term is <span>wavelength, it fits the description that you provided because it is </span><span>the distance between two successive crests or two successive troughs</span>
Answer:
brothers and sisters don't look exactly alike because everyone (including parents) actually has two copies of most of their genes. And these copies can be different. Parents pass one of their two copies of each of their genes to their kids.