Question

A mouse had a gene sequence of GTT coding for leucine, an amino acid. ________ mutation in this gene led to the formation of GTG. However, the amino acid formed was leucine, despite the mutation. This is a ______ mutation for the mouse.
1. Insertion
Deletion
Substitution
2. Harmful
Beneficial
Neutral

Answer 1

it is substitution i think and it may be beneficial to the mouse as the mutation creates once again leucine
so it may be substitution and beneficial

Answer 2

it is substitution (whenever any change in single codon occures) and neutral (there is no effect of substitution till when resultant aminoacid is not changed)

HOPE ANSWER HELPED