OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The two different cells become mutated
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The proteins expressed in each cell are different
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They actually have different DNA in the two types of cells.
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The genome of the different cells changes
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Detailed explanation-1: -Thanks to gene regulation, each cell type in your body has a different set of active genes – despite the fact that almost all the cells of your body contain the exact same DNA.
Detailed explanation-2: -The cell types in a multicellular organism become different from one another because they synthesize and accumulate different sets of RNA and protein molecules. They generally do this without altering the sequence of their DNA.
Detailed explanation-3: -Although all cells contain the same DNA sequence, muscle cells are different from nerve cells and other types of cells because of the different genes that are turned on in these cells and the different RNAs and proteins produced.
Detailed explanation-4: -The correct answer is D. Muscle cells and nerve cells in one species of animal owe their differences in structure to differential gene expression. This is because these two cell types have exactly the same genes and the same types of ribosomes but they each express a different subset of these genes.