The right answer is D (less responsive to antigens)
It is proven that, after puberty, thymus activity (an organ that is included in the lymphatic system, producing T cells that pick up antigens) decreases and that in adult and aged people the thymus has no role. Work done in humans indicate that in fact the cellularity begins to decline from birth in favor of lymphocyte perivascular spaces and connective and adipose tissue, which leads to a decrease in the capture of antigens.
The right answer is a person has more than two alleles for a certain trait.
Duplication is a genetic mutation characterized by the doubling of genetic material on a chromosome. There are several mechanisms that result in the duplication of either a large chromosomal portion, a gene, or a nucleotide sequence.
They have more little impact because they are renewable
Answer;
Ribosomes;
Explanation;
Ribosomes are organelles that are found inside a cell attached to the rough endoplasmic reticulum or freely suspended in the cytoplasm.
The are responsible for the process of translation which synthesis proteins in the cell.
Therefore; a pesticide that kills an insect by interfering with
the production of proteins in the insect would
most directly affect the activity of ribosomes.
