Answer: D) Centrioles
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Centrioles are only found in animal cells and they help during cell division. They organize the spindle fibers that help elongate the cell and separate the chromosomes.
The process of evolution is based on the genotypic inheritance as the genes changes overtime.
The study of human populations is called Demography. Sorry it’s late.
C Chromosomes break at centromeres,and sister chromatids move to opposite ends of the cell.