Question

what base is responsible for hotspot sforce montanus point mutations
Answer guys with explanation ​

Answer 1

$\huge\mathfrak{Answer:-}$

⭕️ Basically,point mutation occurs as a result of replacement of one nucleotide by other in specific nucleotide sequence of gene.

⭕️ Point mutation brings little phenotype change

⭕️ 5-bromouracil is the brominated form of uracil which gets incorporated in the DNA in place of thymine.

⭕️ Therefore, option "b" is the correct answer.

$\huge\mathfrak{Thank you:)}$

Answer 2

Answer:

(B) 5-bromouracil

Explanation:

5-bromouracil is responsible for hot spot for spontaneous point mutations.

Point mutations are the mutations that occur at a single site in the gene.  

There is an addition, substitutions or deletions of the single base in the gene sequence. 5 - bromouracil acts as a mutagen.  

There is some sort of specificity shown by the mutagen for the sites. These mutational sites are called as hotspots. The 5 - bromouracil acts as an analog of thymine.