OBJECTIVE LIFE SCIENCE
GENETICS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
The ability of some cells to remove unnecessary DNA sequences
|
|
|
The regulation of gene expression within each cell type
|
|
|
The mutation of genes within each cell type
|
|
|
The use of different methods of cell division.
|
Detailed explanation-1: -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? The ability of some cells to remove unnecessary DNA sequences.
Detailed explanation-2: -Gene regulation makes cells different These different patterns of gene expression cause your various cell types to have different sets of proteins, making each cell type uniquely specialized to do its job. For example, one of the jobs of the liver is to remove toxic substances like alcohol from the bloodstream.
Detailed explanation-3: -Human nerve cells differ from human muscle cells because different sets of genes are expressed; in each type of cell, different genes are transcribed into mRNA and translated into protein.