Here is an example of all the possible genotypes for all blood types.
The answer is:C
Explaination
There are some factors that influence cancer. Highly the top answer, smoking can DEFINITELY influence the risk because it ruins the lungs. On the other hand, heredity can influence it, too. If you dwell on it, if most of your family members have cancer, then it was passed down from member to member.
The two main types are DNA and RNA
Crossing over is done in Pachytene stage of meiosis 1 !!