Polar bodies serve to eliminate one half of the diploid chromosome set in meiotic division in the egg, leaving behind a haploid cell. That means that 23 pairs (46) of chromosomes are going to be separated equally, 23 for the polar body and 23 for the egg cell. In case of trisomy 18, the division is not equal. Instead, the egg cell receives 23 +1 chromosomes and the polar body receives 23 - 1= 22 chromosomes.
That chromosome that was misplaced is the chromosome 18.
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Answer:
Depends on the environment, climate and etc
Explanation:
Answer:
I think it's B
Explanation:
During QRS that's when the depolarization happens and when that happens the ventricles contract and push blood to the lungs and body.
How does salinity change with temperature ?
<h3> C. as water warms, it contracts and becomes less salty ✓ ...</h3>
- Increases in temperatures of surrounding entities like ice and an increase in precipitation adds fresh water into the sea, which lower salinity ...
Hope this helps you :) ...
Answer:
B
Explanation:
Nerve cells can carry signals and connect all parts of the body to the brain
