The answer is <span>A. The Y chromosome doesn't experience crossing-over.
</span>The crossover of chromosomes is the exchange of genetic material between homologous chromosomes. In males, X and Y chromosomes pairs but they cannot exchange genetic material except at the ends of the chromosomes called pseudoautosomal regions. So, greatly, the Y chromosome <span> doesn't experience crossing-over.
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Through the process of elimination:
B. A mother gives X chromosome and a father gives Y chromosome to the son.
C. The mitochondria cannot be passed in the nucleus of a cell since it is another organelle.
D. It is thought that mitochondria is passed only from mother to her offspring, so they cannot vary greatly.
Because they can move faster than you. And when you move your ands to the fly it looks like it’s in slow motion
The correct answer is marsupials.
<span>Marsupials are any members of the mammalian class Marsupialia and are endemic to Australasia and the Americas. The main characteristic common to these species is that most of the young are carried in a pouch because they give birth to relatively undeveloped young. Examples of marsupials include kangaroos, wallabies, koalas, possums, opossums, wombats, and Tasmanian devils. </span>
ATP only stores energy for a short period of time while starch stores it for a longer period of time.
