In the human brain where do you think all these cells came from consider what you know about mitosis and meiosis have the cells that make up your brain existence is fertilization if so how does human growth occur if not can you trace their origins back to fertilization

after fertilization blastocyst forms It has three origins and

these different types of cells have originated from these three layers only.

Explanation:

Human body cell has 46 chromosomes of 23 pairs of chromosomes. Meiosis is the division occurs in somatic cells which results in haploid cell so during fertilization the male gamete.

condensation. good luck!