Answer:
Chromosomes at the conclusion of Meiosis I - 
Double-helical molecules of DNA at the conclusion of Meiosis I - same as that of parent cells
Explanation:
Given
Number of chromosomes in the diploid cells of Aliens from the planet Zorg 
In the Meiosis I cell division , a cell divides to produce two diploid cells with exactly the same amount of DNA as that of original parent cell.
However, the number of chromosomes is reduced to by half at the end of meiosis I
After Meiosis II, four haploid cells are produces with half the amount of DNA as that of original parent cell
Thus,
Chromosomes at the conclusion of Meiosis I - 
Double-helical molecules of DNA at the conclusion of Meiosis I - same as that of parent cells
B I believe humans were around at that time
Amino acids in proteins are linked to one another by peptide bonds between the carboxyl group of one amino acids and the amino group of another.
Amino Acids has an important role both in building blocks of proteins and as in-between in metabolism. Amino acids also used in every cell of your body to build the proteins you need to survive. A carboxyl group is made of one carbon and two oxygen atoms. Amino acids bond together to make long chains, those long chains are called proteins.