LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

GENETICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of your body cells contain DNA?
A
Only your reproductive cells, like egg or sperm
B
Only your blood cells
C
Only your bone cells
D
Most all of the cells in your body
Explanation: 

Detailed explanation-1: -Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).

Detailed explanation-2: -There are about 37 trillion cells in the human body, all of them containing about 5cm of of DNA (when uncoiled). DNA is made up of lots of different nucleotide pairs that can decide some of our features such as eye and hair colour.

Detailed explanation-3: -When we talk about our genome-all the DNA in our cells-we speak in the singular. But over the course of decades, it has become clear that the genome doesn’t just vary from person to person. It also varies from cell to cell.

Detailed explanation-4: -An organism’s complete set of nuclear DNA is called its genome. Besides the DNA located in the nucleus, humans and other complex organisms also have a small amount of DNA in cell structures known as mitochondria.

There is 1 question to complete.