i need a answer to this,"think of the human brain for a moment. It is an incredibly complex mechanism. It consists of a range of structures, including hemispheres, lobes, and even layers. Each structure is comprised of various types of cells, including nerve cells, blood cells, and cells that make up blood vessels. 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 existed since fertilization? If so, how does human growth occur? If not, can you trace their origins back to fertilization?
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So, the answer is 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 i.e. the
sperm and female gamete i.e. is the ovum fuses and results in diploid structure known as zygote which further divide mitotically (equtional division) and further forms embryo.
The fact is size of 10-20 Fermi is animal cell which has 2 metre long DNA in it's nucleus and that's what makes us, our characters, our habits, and eventually our life.....thanks
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