wiz-icon
MyQuestionIcon
MyQuestionIcon
12
You visited us 12 times! Enjoying our articles? Unlock Full Access!
Question

The mutations that involve addition, deletion or substitution of a single base pair in a gene are referred to as

A
point mutations
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
lethal mutations
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
silent mutations
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
retrogressive mutations.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A point mutations
Most of the gene. mutations involve a change in only a single nucleotide or nitrogen base of the cistron. These gene mutations are called point mutations e.g. sickle cell anemia in which polypeptide chain coding for haemoglobin contains valine instead of glutamic acid due to substitution ofT byA in second position of triplet codon.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Mutation and Variation
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon