Prepare for NEET Biology Molecular Basis of Inheritance (Mutations) with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert guidance to analyze point mutations, frameshifts, and their effects.
NEET Questions / Botany / Molecular Basis of Inheritance / Mutations
A mutation that changes a codon from UUU (phenylalanine) to UUC (phenylalanine) is a:
Missense mutation
Nonsense mutation
Frameshift mutation
Silent mutation
Chromosomal mutations involving changes in the number of chromosomes are known as:
Gene mutations
Point mutations
Frameshift mutations
Ploidy mutations
Which of the following best describes a mutation?
A slow change in the RNA sequence of an organism
A sudden change in the DNA sequence of an organism
A change in the protein structure of an organism
A change in the phenotype of an organism caused by environmental factors
Mutations that occur in germ cells (gametes):
Are never inherited by offspring
Only affect the individual in which they occur
Can be inherited by offspring
Are always beneficial
A point mutation involves:
A change in a whole chromosome
A change in a single nucleotide
The deletion of a whole gene
The duplication of a whole gene
Which of these is NOT a type of point mutation?
Substitution
Insertion
Deletion
Translocation
Silent mutations:
Always cause a change in the amino acid sequence
Do not change the amino acid sequence
Always result in a non-functional protein
Are always beneficial
A mutation that results in a stop codon being introduced prematurely is called a:
Missense mutation
Silent mutation
Frameshift mutation
Nonsense mutation
When gene targeting involving increasing the number of copies of a specific gene is performed in a patient's tissue to treat a disease, it is known as:
Gene augmentation
Gene replacement
Gene editing
Gene knockout
In gene therapy, the introduction of extra copies of a functional gene into a patient's cells to compensate for a defective gene is called:
Gene replacement
Gene silencing
Gene augmentation
Gene editing
