Yes, Jan should undergo genetic sequencing.BRCA1/BRCA2 are the causes of 20-25% of all hereditary breast cancers, so if Jan's mother and sister both have breast cancer, then the odds are that she has BRCA1 as well.
During meiosis when the spindle fibers pull apart the chromosomes this happens at radon so there are different variations of genes being pulled apart
D. Parasitic will be you answer.
Hello!
This would be false as it is just nerves inside of the body impulsing between each other and that would not be necessary to adapt to a new environment.
I hope this helped!
I am, yours most sincerely,
SuperHelperThingy