NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When DNA replication is complete, each set DNA is ____
A
genetically identical
B
contains gene splicing
C
is genetically unique and is not like the parent strand
D
there are 46 new strands of DNA that are all identical
Explanation: 

Detailed explanation-1: -Hydrogen bonds break and helix opens. Each strand of DNA acts as a template for synthesis of a new, complementary strand. Replication produces two identical DNA double helices, each with one new and one old strand.

Detailed explanation-2: -After replication, each DNA has one parental or “old” strand, and one daughter or “new” strand.

Detailed explanation-3: -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-4: -Once the DNA has been replicated, two DNA molecules are formed in which one being the same as the parent and the other one being a newly synthesized strand. The cell can now further undergo division and each daughter cell gets the copy of DNA same as the parent cell.

Detailed explanation-5: -During mitosis, a eukaryotic cell undergoes a carefully coordinated nuclear division that results in the formation of two genetically identical daughter cells.

There is 1 question to complete.