A tautomeric shift in adenine (amino to imino) allows it to pair with . . . . . . . . only.
A. Cytosine
B. Uracil
C. Guanine
D. Thymine
Answer: Option A
Solution(By Examveda Team)
A tautomeric shift in adenine (amino to imino) allows it to pair with Cytosine only.The spontaneous isomerization of a nitrogen base to an alternative hydrogen-bonding form, possibly results in a mutation.
Reversible shifts of proton position in a molecule. Bases in nucleic acids shift between keto and enol forms or between amino and imino forms.
Related Questions on Genetics and Plant Breeding
Genetic code was discovered by
A. Khorana and Methaei
B. Flemming and Methaei
C. Holley, Nirenberg and Khorana
D. Holley and Nirenberg
Progeny of breeder seed is referred to as
A. Breeder seed
B. Nucleus seed
C. Foundation seed
D. Certified seed
Molecular basis of organ differentiation depends on the modulation in transcription by
A. RNA pol
B. Transcription factor
C. Anticodon
D. All of the above
The phenomenon of linkage was first observed by
A. Bateson and Punnet
B. Nilson
C. Hugo de Vries
D. Mendel
Join The Discussion