Answer:
Option A is the correct one.
Explanation:
A cell nucleus has divided by mitosis. ... During the cell cycle, compounds called cyclins increase and decrease in a regular pattern.
Calorie (with a lowercase “c”) is the energy needed to increase the temperature of water by one degree Celsius.
Calorie (uppercase “c”) is the equivalent to a kilocalorie (or 1000 calories)
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The second option: meiosis and fertilization
process A is meiosis, you can see that the gamete(haploid cell) results from the diploid cell. The gamete has n chromosomes(39), whereas the diploid cell has 2n(78)
process B is fertilization the two gametes(haploid) fuse together to form the zygote(diploid)
