A novel virus is discovered with a single-stranded nucleic acid genome. Treatment with RNase H significantly reduces its infectivity, while DNase I has no effect. Further analysis reveals the presence of short RNA fragments complementary to the genome. What can be most confidently inferred about the viral genome?
It is a single-stranded RNA virus that replicates through a DNA intermediate.
It is a single-stranded DNA virus that replicates through an RNA intermediate.
It is a single-stranded RNA virus that replicates through a double-stranded RNA intermediate.
It is a double-stranded RNA virus.
Related Questions
If the DNA of a zygote has adenine, thymine in the gametic DNA is
x
x/2
2x
x/4
Answer briefly
I. Which colour glycogen gives on its reaction with iodine solution?
II. What is satellite DNA?
III. Name three components of a nucleotide molecule
Correct option will all answers is
Reddish-brown; Highly repetitive DNA; Nitrogenous base, pentose sugar, phosphate group
Blue-black; Non-repetitive DNA; Amino acid, hexose sugar, phosphate group
Yellow; Moderately repetitive DNA; Nitrogenous base, triose sugar, sulphate group
Violet; Unique DNA; Amino acid, pentose sugar, phosphate group
Which of the following describes the flow of genetic information according to the central dogma?
RNA to DNA to Protein
Protein to RNA to DNA
DNA to Protein to RNA
DNA to RNA to Protein
Which nitrogenous base is found in RNA but not in DNA?
Adenine
Guanine
Thymine
Uracil
The DNA in which the base sequence of one strand is opposite to that of other strand when read from opposite direction is called
Satellite DNA
Palindromic DNA
Repetitious DNA
Non-coding DNA
A mutation in a tRNA molecule alters its anticodon sequence from 3'-AUC-5' to 3'-AUA-5'. Assuming the wobble hypothesis applies, which of the following changes in protein synthesis is MOST likely to occur?
Protein synthesis will be terminated prematurely.
A different amino acid will be incorporated at the corresponding codon.
The mutant tRNA might recognize a different codon but still incorporate the same amino acid.
The mutation will have no effect on protein synthesis.
One turn of DNA has nucleotide pairs
8
100
6
10
The form of DNA with 34Å pitch with a rise per base pair of 3.4Å is called
A-DNA
B-DNA
Z-DNA
C-DNA
Which of the following statements are true?
I. Genetic RNA occurs in certain viruses called ribovirus
II. RNA of riboviruses may be single stranded
III. Double stranded RNA may also be present in riboviruses
All are correct
Only I
All are incorrect
Only II
