Crossing over is the main event in meiosis and heredity as it leads to genetic variation.
<h3>What is genetic variation?</h3>
Genetic variation is the changes that take place in the genes of individuals that can lead to the formation of new characters.
it generally occurs in meiosis specifically during crossing over.
Thus, it can be concluded that crossing over between non-sister chromatids during meiosis is significant in heredity as it leads to genetic variation.
For more details regarding crossing over, visit:
brainly.com/question/27256451
#SPJ4
I think it’s B I’m not sure
<span>Depending on the situation, oxygen will be given and the patient will be instructed to breathe very slowly. If it is a panic attack, medication or a shot may be given to slow breathing and stop the attack.
You can prop the patient up so they more easily breathe. Then they will administer oxygen and instruct you to take deep slow breaths. If this is caused by anxiety, further medication may be given.
You might be clostrophobic or there might be a lot of dust in the house which would block the moisture in your lungs. This would make you gasp for air.
You have a preliminary period of just classroom study before they let you loose on patients. This varies, but 6 wks at a minimum .
Don't mean to alarm you but this could be lung leakage or a heart attack symptom. Or you could be suffering from anxiety.</span>
Sure. Single-cell organisms include bacteria and hens' eggs.