Advertisements
Advertisements
Question
What is the smallest part of a DNA molecule that can be changed by a point mutation?
Options
Oligonucleotide
Codon
Gene
Nucleotide
Solution
Nucleotide
Explanation:
It is made up of phosphate and nucleoside groups and is the smallest unit of DNA. the basic building block of nucleic acids like DNA and RNA. It is subject to point mutation.
APPEARS IN
RELATED QUESTIONS
Group the following as nitrogenous bases and nucleosides:
Adenine, Cytidine, Thymine, Guanosine, Uracil and Cytosine.
Which property of DNA double helix led Watson and Crick to hypothesise semi-conservative mode of DNA replication? Explain.
In some viruses, RNA is present instead of DNA indicating that ______.
In a DNA strand the nucleotides are linked together by ______.
The fact that a purine base always paired through hydrogen bonds with a pyrimidine base leads to, in the DNA double helix ______.
While analysing the DNA of an organism a total number of 5386 nucleotides were found out of which the proportion of different bases were: Adenine = 29%, Guanine = 17%, Cytosine = 32%, Thymine = 17%. Considering the Chargaff’s rule it can be concluded that ______.
What is the nature of the strands of the DNA duplex?
There is no DNA in ______.
Which of the following is a structural subunit of DNA?
A short piece of DNA, having 20 base pairs, was analyzed to find the number of nucleotide bases in each of the polynucleotide strands. Some of the results are shown in the table.
Number of nucleotide bases | ||||
Adenine | Cytosine | Guanine | Thymine | |
Strand 1 | 4 | 4 | ||
Strand 2 | 5 |
How many nucleotides containing Adenine were present in strand 2?