What is the most important reason why a cell in your brain is different than a c
ID: 47814 • Letter: W
Question
What is the most important reason why a cell in your brain is different than a cell in the muscle of your toe?
the two cells have different DNA sequences
the two cells have different number of chromosomes
the two cells have different numbers of ribosomes
the two cells have different patterns of gene expression
a.the two cells have different DNA sequences
b.the two cells have different number of chromosomes
c.the two cells have different numbers of ribosomes
d.the two cells have different patterns of gene expression
Explanation / Answer
The correct answer is option (d) the two cells have different patterns of gene expression.
All the cells in an organism contain the same set of DNA sequences, same number of chromosomes, and approximately equal number of ribosomes. However, the difference arises from the different patterns of gene expression. Though all cells contain the same genome, different genes express in different cells and tissues, depending on the type of the organ. This differential expression leads to cell differentiation.
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