Question

All EXCEPT which of the following statements are evidence that DNA, and not protein, is the genetic material in eukaryotes as well as bacteria

Answer 1

The given question is incomplete. The complete question is:

All EXCEPT which of the following statements are evidence that DNA, and not protein, is the genetic material in eukaryotes as well as bacteria

a) UV light is most mutagenic at a wavelength at which DNA and RNA strongly absorb.

b) DNA has four nucleotides.

c) Introduction of a cloned DNA into another organism results in the production of the corresponding protein product.

d) DNA is located only where the primary genetic function is known to occur.

Answer:

b) DNA has four nucleotides.

Explanation:

DNA is a polymer of nucleotides. Each nucleotide has a pentose sugar deoxyribose, a phosphate group, and a nitrogenous base. Nucleotides of DNA may have one of four different nitrogenous bases: adenine, cytosine, guanine and thymine. Accordingly, DNA is made up of four types of nucleotides. These are namely, deoxyadenylate, deoxyguanylate, deoxythymidylate and deoxycytidylate. However, the presence of four types of nucleotides in DNA does not prove its nature as genetic material in prokaryotes and eukaryotes.

Answer 2

The question is incomplete as it does not have the options which are:

• UV light is most mutagenic at a wavelength at which DNA and RNA strongly absorb.
• DNA has four nucleotides.
• Introduction of a cloned DNA into another organism results in the production of the corresponding protein product.
• DNA is located only where the primary genetic function is known to occur.

Answer:

DNA is located only where the primary genetic function is known to occur.

Explanation:

DNA acts as the genetic material of almost all living organisms on Earth except few viruses which contains RNA as their genetic material.

Since it is not necessary that the DNA is present only at the site where its function is known is incorrect as DNA is found in every cell of the multicellular organism and in a unicellular organism. It is the expression of the specific genes which the cell acquire during the differentiation.

All other provided option except the selected options is evidence of the DNA as the genetic material.