Genetic variation is the variation in the DNA sequence in the genome of an organisms. Organisms of a species have similar characteristics but they are not identical due to genetic variation. Genetic variation is important in the survival and the adaptability of a given species of organism. Therefore, in this case lack of genetic variation necessary to adapt to change in the environment will lead to extinction of the fish species that lacks the variation.
The answer should be D.) Each chromosome contains a single, tightly wound DNA molecule
Answer:
ATP & ADP are nucleic acids.
Explanation:
ATP and ADP are macromolecules of nucleic acids as they are made up of structures similar to DNA.
An ADP molecule is made up of two phosphate groups, a sugar backbone (ribose) and the nucleotide adenine.
An ATP molecule is made up of sugar backbone, three phosphate groups and the nucleotide adenine.
Hence, Both the structures are similar to DNA and RNA. As the structures contain nucleotides hence ATP and ADP are nucleic acids macromolecules.
Answer AND Explanation:
Respiration by both plants and animals as well as by microorganisms converts some of the organic compounds into carbon dioxide. The latter is released back to the atmosphere and reused by green plants.