Answer:
Specie
Explanation:
They are a group that interbreed with each other, only, since they cannot produce fertile offspring with those of another species.
Interneurons are those neurons that transduces the vague information received from the afferent neurons and sends a response to the efferent neurons.
Neurons are the basic unit of the nervous system. Hence, these nerve cells are the cells that transmits electrical impulses that causes a person to respond, move and irritable (respond to stimuli).
Crossing over occurs at the four-strand stage when two homologous chromosomes, each consisting of a pair of sister chromatids, are paired. Each crossover involves just two of the four strands and generates two recombinant strands.
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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.
