The codon is read in mRNA in a _______ fashion.

[Molecular-Basis-of-Inheritance] [class-xii ]

• Contiguous
• Overlapping
• Random
• Discontinuous
Correct Option: A  [ Contiguous ]

Remark: It is read contiguously without punctuation.

The genetic code is nearly _______

[Molecular-Basis-of-Inheritance] [class-xii ]

• Specific
• Universal
• Ambiguous
• Variable
Correct Option: B  [ Universal ]

Remark: It is nearly universal across organisms.

Mutations that involve addition or deletion of bases are called _______ mutations.

[Molecular-Basis-of-Inheritance] [class-xii ]

• Point
• Frameshift
• Silent
• Missense
Correct Option: B  [ Frameshift ]

Remark: Indels cause frameshifts.

tRNA acts as an _______ molecule.

[Molecular-Basis-of-Inheritance] [class-xii ]

• Adapter
• Enzyme
• Structural
• Genetic
Correct Option: A  [ Adapter ]

Remark: tRNA adapts the code to amino acids.

tRNA has an _______ loop that reads the code.

[Molecular-Basis-of-Inheritance] [class-xii ]

• Acceptor
• Anticodon
• D
• T
Correct Option: B  [ Anticodon ]

Remark: The anticodon reads the mRNA.

Amino acids bind to the _______ end of tRNA.

[Molecular-Basis-of-Inheritance] [class-xii ]

• 5'
• 3'
• Anticodon
• Loop
Correct Option: B  [ 3' ]

Remark: Amino acids bind to the 3' end.

The enzyme aminoacyl-tRNA synthetase catalyzes _______ of tRNA.

[Molecular-Basis-of-Inheritance] [class-xii ]

• Transcription
• Charging
• Translation
• Splicing
Correct Option: B  [ Charging ]

Remark: It charges the tRNA with amino acid.

Translation occurs in the _______

[Molecular-Basis-of-Inheritance] [class-xii ]

• Nucleus
• Cytoplasm
• Mitochondria
• Golgi
Correct Option: B  [ Cytoplasm ]

Remark: Ribosomes translate in the cytoplasm.

Ribosomes are composed of _______ and proteins.

[Molecular-Basis-of-Inheritance] [class-xii ]

• DNA
• RNA
• Lipids
• Sugars
Correct Option: B  [ RNA ]

Remark: Ribosomes are rRNA + proteins.

The 23S rRNA in bacteria acts as a _______

[Molecular-Basis-of-Inheritance] [class-xii ]

• Primer
• Template
• Ribozyme
• Repressor
Correct Option: C  [ Ribozyme ]

Remark: It acts as an enzyme (ribozyme) for peptide bond formation.