The size of VNTR varies from:
0.1 to 20 kb
The size of VNTR (Variable Number Tandem Repeats) varies from 0.1 to 20 kb (kilobases):
1. VNTRs are repetitive sequences of DNA with variable lengths that differ between individuals.
2. Their size range makes them suitable for applications like DNA fingerprinting and forensic identification.
3. This broad range of sizes allows for significant variability, aiding in distinguishing individuals based on their genetic profiles.
Nucleosome is:
Select the incorrect statement:
Match List-I with List-II:
| List-I (Genes) | List-II (Proteins – codes for lac operon) |
|---|---|
| (A) ‘i’ | (I) permease |
| (B) ‘a’ | (II) β-galactosidase |
| (C) ‘y’ | (III) transacetylase |
| (D) ‘z’ | (IV) repressor |
Choose the correct answer from the options given below:
Amino acid is attached to which site of tRNA?
Given below is the DNA coding sequence. Its complementary strand would read as:
5′ – GTATTACG – 3′
In which phase of the cell cycle does replication of DNA take place?
In Hershey and Chase experiment, some viruses grew on medium that contained:
Who performed experiments on Vicia faba to prove that DNA replicates semi-conservatively?
Match List-I with List-II:
List-I (Scientists)
List-II (Discovery)
| List-I | List-II |
|---|---|
| (A) Sutton and Boveri | (I) X-Body |
| (B) Sturtevant | (II) Chromosomal Theory of Inheritance |
| (C) Henking | (III) Transformation in bacteria |
| (D) Griffith | (IV) Genetic maps |
Choose the correct answer from the options given below:
Which of the following statements are incorrect with respect to nucleotides?
(A) Purines and pyrimidines are nitrogenous bases.
(B) Nucleotides are non-enzymatic molecules.
(C) Phosphate group is linked to –OH of 5' C of a nucleoside through phosphoester linkage.
(D) In RNA, every nucleotide residue has an additional –OH group present at 2' position in the ribose.
(E) Thymine is an example of pyrimidine.
Nucleosome is:
Select the incorrect statement:
Match List-I with List-II:
| List-I (Genes) | List-II (Proteins – codes for lac operon) |
|---|---|
| (A) ‘i’ | (I) permease |
| (B) ‘a’ | (II) β-galactosidase |
| (C) ‘y’ | (III) transacetylase |
| (D) ‘z’ | (IV) repressor |
Choose the correct answer from the options given below:
Amino acid is attached to which site of tRNA?
Given below is the DNA coding sequence. Its complementary strand would read as:
5′ – GTATTACG – 3′