A) Crossing over is the mechanism of genetic variation that results from the exchange of gene segments between non-sister chomatids.
Heaps and heaps and heaps and heaps of them!
Answer:
An extremophile
Explanation:
An extremophile is an organism that thrives in extreme environments. Extremophiles are organisms that live in "extreme environments," under high pressure and temperature. ... Since they live in “extreme environments” (under high pressure and temperature), they can tell us under which range of conditions life is possible.
The cancer has not invaded other tissues is the conclusion which can be made if the cell margins of a biopsy are clear when observed under a microscope in this scenario.
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What is Biopsy?</h3>
This medical procedure involves taking sample of cells or tissues from parts of the body and observing it under a microscope.
The microscope function is to enlarge the objects which are positioned on the objective lens thereby making it possible for them to be seen more clearly and accurately.
If the cell margins of a biopsy are clear when observed under a microscope, it means the cancer hasn't invaded other parts while in a scenario where the cell margins are crowded then it depicts the presence of cancerous cells thereby making it the most appropriate choice.
Read more about Biopsy here brainly.com/question/14583794
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