The first case of cytoplasmic inheritance was reported by:
A) Correns
B) Mendel
C) Renner
D) Winge
Name the RNA molecules used to carry genetic information copied from DNA:
A) tRNA
B) mRNA
C) rRNA
D) snRNA
In this type of DNA replication, of the two newly formed molecules, one is purely new and the other is old:
A) Dispersive
B) Conservative
C) Semiconservative
D) None of these
If the DNA strand has nitrogenous base sequence ATTGCC, the mRNA will have:
A) ATTGCA
B) UGGACC
C) UAACGG
D) ATCGCC
The type of coiling in B-DNA is:
A) Zig-zag
B) Left-handed
C) Opposite
D) Right-handed
In DNA, the enzyme which breaks the H₂ bonds is:
A) Ligase
B) Helicase
C) Topoisomerase
D) Polymerase
To which of the following does thymine form hydrogen bonds in DNA?
A) Adenine
B) Thymine
C) Cytosine
D) Guanine
What term is used to describe the process by which DNA is copied to produce two daughter DNA molecules?
A) Reproduction
B) Translation
C) Replication
D) Transcription
In the double helix of DNA, the two DNA strands show which type of characteristics?
A) Coiled around a common axis
B) Coiled around each other
C) Coiled differently
D) Coiled over protein sheath
DNA is composed of repeating units of:
A) Deoxyribonucleotides
B) Ribonucleotides
C) Deoxyribonucleosides
D) Ribonucleosides

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