THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
What type of cells do not actively divide by mitosis?
|
|
Hair
|
|
|
Skin
|
|
|
Bone
|
|
|
Brain & Spinal Cord
|
|
|
Blood Cells
|
Explanation:
Detailed explanation-1: -While these connective tissue cells and epithelial cells can undergo mitosis and regenerate themselves upon damage or to replace the older ones, the main brain cells or the neurons cannot undergo mitosis. Their number remains the same from birth.
Detailed explanation-2: -Skin cells, red blood cells or gut lining cells cannot undergo mitosis.
Detailed explanation-3: -There is absence of centrioles in the nerve cells and because of this they are unable to perform mitosis and meiosis and hence these cells do not divide.
Detailed explanation-4: -Neural stem cells increase by dividing in two and producing either two new stem cells, or two early progenitor cells, or one of each.
There is 1 question to complete.