The pathway will be;
The body cells becomes infected with a virus= then new viral proteins appear = class I MHC molecule-antigen complex displayed on cell surface.
Cytotoxic T cell is a T lymphocyte that kills cancer cells, cells that are infected or cells that are damaged in other ways. They are activated on the surface of antigen-presenting cells, which mature during the innate immune responses triggered by an infection.
Can i get the answer choices?
Cells have different uses and functions. There must be differentiation/diversity between cells to form a functional organism.
To know what happens here, we need to see how alleles work.
You have three species: cremello, chestnut, and palomino all will be homozygotes with two alleles each.
One of these will be recessive (aa), one will be dominant (AA), and one will be a mixture (Aa).
You know the offsprin, so Cremello and Chestnut are the recessive and dominant ones. If you draw the Punnett square, you'll find out all breeding are pure.
Now, if you draw de Palomino Punnett square having one recessive allele and one dominant allele from each paren, you'll found 1/4 cremello (aa), 1/4 chestnut (AA) and 1/2 palomino (Aa).
Both A, B, and C are found in the excretory system.
Myofibrils are in the muscle of the intestines, villi increase surface area of the intestine, and nephrons help to filter in the kidney. Osteoblasts are found in bone, so therefore is not part of the excretory system