CELL STRUCTURES AND FUNCTION
CELL CYCLE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
it results in a variety of traits amongst the same type of cells
|
|
|
it ensures more genetic material in the strongest cells
|
|
|
it ensures both cells will have identical, correct genetic information
|
|
|
it creates variety amongst cells
|
Detailed explanation-1: -DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell.
Detailed explanation-2: -In both mitosis and meiosis the replication of DNA and chromosomes occurs at the same stage.
Detailed explanation-3: -The new cell needs to have DNA exactly like the rest of your cells. Otherwise, that cell might malfunction. That’s why it’s important that the process of copying DNA, called DNA replication, is very accurate.
Detailed explanation-4: -DNA contains the instructions for making proteins and enzymes, which are necessary for a cell’s survival. DNA replication produces a second copy of DNA, which is then transported to a newly created cell. If DNA is not replicated, the daughter cell lacks the necessary protein synthesis machinery to survive.
Detailed explanation-5: -Because DNA is a depository of genetic information, DNA replication and segregation must be achieved with extreme fidelity. Failure of these processes can cause mutations and chromosome rearrangements, leading to diseases or even death (Abraham 2001; Kastan & Bartek 2004).