C Chromosomes break at centromeres,and sister chromatids move to opposite ends of the cell.
Answer: experiments
Explanation: ap ex certified
It proves that living organisms MUST come from other living organisms, an egg couldn't magically appear in a pile of chicken seed, a hen would have had to lay the egg first, just as a nucleoulus makes ribosomes so the cell can have proteins, the proteins don't just materialize within the organism.
Answer:
<h2>Biological servises </h2><h2>Hope it helps ;)</h2>
Answer:Ovulation—>Fertilization—>Implantation—->Birth
Explanation:the ovum is first released(ovulation) then a sperm merges with it (fertilization) the zygote is moved to the uterus(implantation) it grows to become a baby and the mother delivers it(birth)
