Human bone, muscle, and nerve cells all contain the same number of chromosomes with the same complement of genes. what enables these cells to perform specialized activities?

a. the ability of some cells to remove unnecessary dna sequences
b. the regulation of gene expression within each cell type
c. the mutation of genes within each cell type
d. the use of different methods of cell division

The correct answer is B) The regulation of gene expression within each cell type.

The body of an organism is made of cells, which possess same number of chromosomes ( like 46 chromosomes in all human cells) with the same complement of genes. This means that all the specials ed cell ( performing specialized function in the body) like bone, muscle, nerve cells contain the same number of chromosomes.

The difference in their activities/ functions is primarily because of differential expression of genes. In other words, different genes are transcribed and translated in different cells resulting in the formation of different proteins. This enables them to perform different functions.

Thus, the regulation of gene expression within each cell type enables them to perform differently.

the dna of humans and mice is almost 92% similar. this similarity indicates that . mice have a tail, while humans have a tailbone. the tailbone is a structure in humans.yes it's true.