Answer:
Chlorine and Bromine are in the same group
DNA A and B are probably the most closely related because cells get DNA from the parent cells therefor similar DNA comes from relatives.
Heterozygous means A capital P with a lowercase p. There are two purple flowers in the Punnett square with Pp out of 4 possible options. 2/4 is 1/2 which is 50%. So there is a 50% chance of a purple heterozygous flower.
Oil doesn't dissolve in water, which could be your answer.
