Hello there.
<span>The crossing over is a process where the chromatids pair and exchange sections of DNA, which lead to exchange genes (this result is call genetic recombination). So, the crossing over between nonsister chromatids during meiosis is significant in heredity because it leads to an increase of genetic variation (answer d.)</span>
The companies are looking for minerals to make money and keep their business growing
Charles is an engineer who is evaluating a prototype of an artificial heart. He should notice the prototype missing is : a structure that would divide the hollow heart into chambers to separate oxygenated blood from deoxygenated blood.
Cells Can<span> Replicate </span>Their DNA<span> Precisely. Replication is the process by which a double-stranded </span>DNA<span> molecule is copied to </span>produce<span> two identical </span>DNA<span> molecules. ... Each time a </span>cell<span> divides, the two resulting </span>daughter cells<span> must contain exactly the same genetic information, or </span>DNA<span>, as the parent </span><span>cell</span>
The answer is D.
It is the most needed because if the waste of the body doesn't get removed then you will become very ill and possibly die.
Hope this helps! :)