Your answer would be valence electrons, i believe.
Answer:
B
Explanation:
I looked it up as well as thought
The number and appearance of chromosomes in a cell is called a karyotype. A karyotype can only be seen and studied with a microscope. ... Karyotype analysis can reveal abnormalities, such as missing chromosomes, extra chromosomes, deletions, duplications, and translocations.
Link:https://study.com/academy/lesson/karyotype-definition-disorders-analysis.html
Note: This information has been taken out of a website.
<span>nothing actually happens to convection currents when heat is no longer supplied.
</span>