If the length of a DNA molecule is 1.1 metres, what will be the approximate number of base pairs?
- 3.3 × 109 bp
- 6.6 × 109 bp
- 3.3 × 106 bp
- 6.6 × 106 bp
The Correct Option is A
Solution and Explanation
The length between two base pairs is 0.34nm.
Total length of double helix DNA = total number of base pairs * distance between two bp
Hence, total no. of base pairs = (Total length of double helix DNA) / (distance between two bp)
total no. of base pairs = 1.1m/0.34 nm
= (1.1 x 109 nm) / (0.34 nm)
= 3.235 x 109 base pairs
= 3.3 x 109 base pairs
Therefore, the correct answer is (A) : 3.3 × 109 bp.
Top Questions on the molecular basis of inheritance
- Nucleosome is associated with ______ molecules of histones.
- CUET (UG) - 2024
- Biology
- the molecular basis of inheritance
Match List I with List II.
List-I List-II (a) Gene ‘a’ (i) β-galactosidase (b) Gene ‘y’ (ii) Transacetylase (c) Gene ‘i’ (iii) Permease (d) Gene ‘z’ (iv) Repressor protein Choose the correct answer from the options given below:
- NEET (UG) - 2023
- Biology
- the molecular basis of inheritance
What is the role of RNA polymerase III in the process of transcription in Eukaryotes?
- NEET (UG) - 2023
- Biology
- the molecular basis of inheritance
Unequivocal proof that DNA is the genetic material was first proposed by
- NEET (UG) - 2023
- Biology
- the molecular basis of inheritance
- Which enzyme initiates the process of replication?
- MHT CET - 2023
- Biology
- the molecular basis of inheritance
Questions Asked in NEET exam
- A thin flat circular disc of radius 4.5 cm is placed gently over the surface of water. If surface tension of water is 0.07 Nm-1, then the excess force required to take it away from the surface is :
- NEET (UG) - 2024
- Surface tension
- Which of the following are required for the dark reaction of photosynthesis?
A. Light
B. Chlorophyll
C. CO2
D. ATP
E. NADPH
Choose the correct answer from the options given below:- NEET (UG) - 2024
- Where Does Photosynthesis Take Place?
- If \(x=5\sin(\pi i+\frac{\pi}{3})m\) represents the motion of a particle executing simple harmonic motion, the amplitude and time period of motion, respectively, are :
- NEET (UG) - 2024
- simple harmonic motion
- The highest number of helium atoms is in
- NEET (UG) - 2024
- Electronic configuration of atoms and ions
- \(^{290}_{82}X\stackrel{\alpha}{\rightarrow}Y\stackrel{e^+}{\rightarrow}Z\stackrel{\beta^-}{\rightarrow}P\stackrel{e^-}{\rightarrow}Q\)
In the nuclear emission stated above, the mass number and atomic number of the product Q respectively, are :- NEET (UG) - 2024
- Nuclear physics
Concepts Used:
The Molecular Basis of Inheritance
DNA Replication:
DNA synthesis is commenced at particular points within the DNA strand referred to as ‘origins’, which are certain coding regions. There are numerous origin sites, and when replication of DNA starts, these sites are mentioned as replication forks. Within the replication, the complex is the enzyme DNA Helicase, so that they can be utilized as a template for replication. DNA Primase is another enzyme that's essential in DNA replication.
RNA:
Ribonucleic acid (RNA) is an essential biological macromolecule that exists all together in biological cells. It is principally involved in the synthesis of proteins, that carry the messenger instructions from DNA, which itself contains the genetic instructions needed for the event and maintenance of life. In some viruses, RNA, in spite of DNA, carries genetic information.
Genetic Code:
Genetic code is the term we use in the manner that the four bases of DNA--the A, C, G, and Ts--are strung together in a way that the ribosome, the cellular machinery, can read them and switch them into a protein. In the ordering, every three nucleotides during a row count as a triplet and code for one amino alkanoic acid.
Read More: Molecular Basis of Inheritance
SUBSCRIBE TO OUR NEWS LETTER
