Question

Skin and nerve cells have different appearances and characteristics from each other, although they contain the same DNA. Why?

Answer 1

A the genes expressed in in skin cells may not be expressed in nerve cells and vise versa
B the genes in skin cells are transcribed but not translated as genes of nerve cells
C the DNA in nerve cells undergoes mutations making them different from DNA in skin cells.

Answer 2

I think its A

Answer 3

ans is A
more thing u should know

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Every cell within an organism has the same genetic composition (with the exception of its gametes), and yet, obviously skin tissue is very different from nervous tissue. The DNA sequence cannot provide information about these differences, which represent the next level of complexity and organization within an organism: DNA expression. Cells within a multicellular organism, such as ourselves, specialize to perform specific functions to increase the efficiency of the organism. Nerve cells, or neurons, express neuron-specific proteins that allow it to perform neuron duties. Skin, or epithelial cells, have their own specific proteins that enable their protective functioning. Both neuron and epithelial cell have the genes encoding for neural- and epithelial-specific proteins, but each cell only expresses the genes that it requires, and not other tissue-specific genes. In this way, a given DNA sequence only provides information about what could be, not what actually is

Answer 4

http://www.encyclopedia.com/topic/cell.aspx

Answer 5

Ill check it out right now!

Answer 6

sure in further in case u ll get help too i hope

Answer 7

i have diagram showing protein synthesis

Answer 8

Ill check it out [: !

Answer 9

A is not right