Crossing over. Parts of sister chromatids will sometimes switch places with the parallel part, resulting in a completely unique DNA sequence.
Percentage of human sperm cells carry an X chromosome is C 50%
Answer:
polar regions and nonpolar regions
Explanation:
if right braniliest? I only need one more
<span>When this situation happens you would begin by suspecting an opiate or barbiturate overdose then you would begin mouth-to-mask rescue breathing.</span>
Answer: They both circulates from a region of lower concentration to a region of higher concentration.
