How do some cells become brain cells and other cells skin cells?

Answer 1

by specialization

Answer 2

This is called cell differentiation and it is driven by chemicals/chemical gradients in the blastula development stage of the embryo (the early stage of development when it is a hollow ball of cells). These chemicals have the effect of causing the cells in different areas of the ball to start doing different things from other areas. The DNA in all the cells is the same but different bits of DNA (genes) are used for making proteins/enzymes as the cells differentiate.

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Because it is believed that cells have the ability to turn off some genes and only use certain ones that are needed for the specific job that the cell is doing.

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While the DNA in one's cells may be the same, not all of the genes are active at the same time. Some genes code for proteins that regulate the expression of other genes, for example. In addition, internal conditions in the cells during development of the embryo may affect the order in which certain genes are expressed as well. This differential gene expression results in the diversity of tissues we see.

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The DNA in every cell in an organism, such as a person, is indeed the same. It is like an encyclopedia. But in every cell only some of the pages of the encyclopedia are open and being read.

Enough of that encyclopedia metaphor! We have about 20,000 genes, which determine how we turn out as we grow and develop, and as cells differentiate. Every one of these genes is represented in every cell - twice, in fact, as there is one copy of the gene from Mom and one from Dad.

But in every cell only some of the genes are active. For example, there are genes for making hair and fingernails. But those genes are not active in most cells, otherwise we would be sprouting hair all over the liver and nails from the tips of our noses.

When some genes are activated, and the cell as a result makes the proteins that they code for, we say that the genes are being expressed.

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Because the DNA is controlled in it's expression and in it's length of expression. In some cells some DNA is turned off while other DNA is turned on, so different protein products are developed and combined in different ways to make different cells

This is a very simplified explanation of cellular development.

Answer 3

When a new cell is forming, it goes through the process of cellular differentiation where it specializes into specific kind of cell (brain cell, skin cell, etc.). After this process the cell often joins a tissue (which is an agglomeration of many specialized cells).

Answer 4

by specialization

Answer 5

Impossible. Each cell is made for a specific function. Skin cells cannot go to the brain and brain cells cannot break through the skull, and surface its way up to the skin.

Answer 6

Cell's Do Not Automatically Become Other Cells. Special Cells Such As Brain Cells are Orginated like that from the begginning

Answer 7

BMP