<span>As given
21.2 / 5.3 = 4 times.
Hence,
The answer would be
(1/2)^ 4
=1/16
So the answer is D</span>
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<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>
A. Igneous because liquid rock is magma
Organs are the level of the heartbeat