The DNA sequence of a portion of gene in a wild- type organism is TTACCATATTCACCC, and the corresponding peptide sequence is Leu- Pro- Tyr- Ser- Pro. The corresponding gene fragment in phenotypic variant of the organism is TTACCATATTCACCC and the peptide sequence is Leu- Pro- Cys- Ser- Pro. This is an example of a mutation (type) resulting in a mutation (effect).
A) base substitution; silent
B) insertion; nonsense
C) deletion; missense
D) base substitution; nonsense
E) base substitution; missense

Question

Quizplus · Accepted Answer

A base substitution is a mutation in which one nucleotide is replaced by another. In this case, the base substitution results in a missense mutation, which is a mutation that changes the amino acid sequence of a protein.

The DNA Sequence of a Portion of Gene in a Wild-