Question

Differentiated cells of an organism contain the same genes. (among the few exceptions to this rule are the cells of the mammalian immune system, in which the formation of specialized cells is based on limited rearrangements of the genome.) describe an experiment that substantiates the first sentence of this question, and explain why it does.

Answer 1

In a multicellular organism the cell types are different from one another due to synthesis and the accumulation of different RNA and protein molecule sets. During this process DNA sequence is not altered in any way.

Step-by-step explanation:

This is observed in a frog experiment. A nucleus of a differentiated frog cell is inserted into another frog egg, the inserted nucleus is able to command the egg to produce a normal tadpole. The tadpole holds the DAN sequence from the donor frog, thus exhibiting the DNA of the donor frog.

Answer 2

A perfect experiment to substantiate the claim that all differentiated cells of an organism contain the same genes would include the following steps.
1 Extraction of the DNA from different differentiated cells of the same organism
2 Sequencing the extracted DNA
3 comparing the DNA sequences

The DNA sequences we would observe would be identical, proving empirically that all of the cells in an organism contain the same DNA, and therefore the same genes.