Question

DNA is a genetic material:
(i) Due to its stability.
(ii) Its ability to replicate.
(iii) Its ability to mutate.
(iv) Its ability to express itself.
Choose the correct combination.
A. (i) and (ii)
B. (i), (iii) and (iv)
C. (iii) and (iv)
D. (i), (ii), (iii) and (iv)

Answer 1

Hint: Genetic material must be stable, self replicating, must have ability to replicate itself and should mutate at a lower rate. Now, proteins are not self replicating so they are not genetic material. RNA is less stable than DNA because of the presence of uracil in RNA as compared to thymine in DNA. Also RNA has enzymatic ability which makes it more reactive and less stable. RNA mutates at a faster rate when compared to DNA.

Complete step by step solution:
The genetic material is today understood to be DNA, the molecule that carries genes, is handed from parents to children, and contains instructions for the development and operation of living things. To identify the DNA and proteins in viruses, scientists used various radioactive elements. In doing so, they were able to determine which molecule the viruses had put into the bacteria. They discovered the molecule to be DNA. That DNA is the genetic substance was thus proved. It must include all the data that is pertinent to biology in a stable form.
For the control of cellular biological processes, it should be able to both express and store information in coded form. It should display diversity that reflects the diversity found in the creatures. It should be able to undergo mutations and recombination, among other changes. Such variances also need to be durable and inheritable. The genetic material needs to be able to produce molecules of both its own sort and brand-new varieties. Despite sharing the same genetic material, it should be able to express itself in varied ways so that the various components of an organism can have unique forms, structures, and functions.
So, option (D) is correct.

Note:
Any object with a genetic code that may transmit information from one generation to the next, whether it be an animal, plant, microbe, or other origin. It regulates such things as behavior, development, and reproduction. In humans, this material is DNA because of all the above properties but some viruses can have RNA as genetic material, one such example is HIV virus that is why it mutate fastly and changes its form because of this formation of HIV vaccines is difficult.