Answer:
your answers are gonna be a,c and d
Explanation:
For natural selection to happen <span>there must be genetic variation in the population for it to even work</span>
The phosphate group and the deoxyribose sugar.
More info: the three parts of a nucleotide are the PHOSPHATE GROUP, DEOXYRIBOSE SUGAR, and the NITROGENOUS BASE.
Take both parent's genotypes and create a punnett square. This helps determine what percentage of genotypes their children will have.