Question

an illustration of how a particular dna mutation will likely affect the polypeptide produced is shown.
what type of mutation is illustrated?
a insertion
b translocation
c substitution
d deletion
when a new mutation occurs in a somatic cell of a sexually reproducing organism, with what percentage of the individuals offspring are likely to inherit the mutation?
a 100%
b 75%
c 25%
d 0%
the model shows a mutation to a partial sequence of bases in a gene.
... cgt ata tc c tat gcc cct gac...
tatc
which type of mutation does the model demonstrate?
f deletion
g insertion
h substitution
j translocation

Explanation:

• First question: In the first diagram, one base is replaced with another (substitution). For example, if a particular base in the DNA strand is changed, it's substitution.
• Second question: Somatic cell mutations are not passed to offspring in sexually - reproducing organisms. Only mutations in germ cells (sperm and egg) can be inherited. So the percentage is \(0\%\).
• Third question: In the third diagram, an extra base (or bases) is added (insertion).

Answer:

1. C. Substitution
2. D. \(0\%\)
3. G. Insertion