<span>Alleles are each of two or more alternative forms of a gene that are found at the same position in a chromosome. Traits on the other hand, are the characteristics that are defined by genes. So the combination of alleles for a gene is what manifests itself into a trait.</span>
After the macrophage fails the Helper T Cell stimulates the B cells if pathogen is extracellular and Cytotoxic T Cells if the pathogen is intracellular. Once the pathogen is killed the B Cells create Memory B Cells and the Killer T Cells create memory T Cells.
I thinking A. or B. but im sure it one of them. that's a 50% chance.
Answer:
Minus 36 and divide the rest by two
Explanation:
Cell walls and chloroplasts are structures present in plant cells but not animal cells
