Question

Which answer below, would be a possible new strand if there was a insertion mutation in the sequence below?

T T C G A A T C G T A T G A C

answers

1.

T T C G A A T C T G T A T G A C

2.

 T T G A A T C G T A T G A C

3.

T T C G A A T C C T A T G A C

4.

T T C G A T T C G T A T G A C

Answer 1

Answer: The correct answer is -

1. T T C G A A T C T G T A T G A C

Step-by-step explanation:

Insertion mutation is a type of mutation that results in the addition of one or more nucleotides to the DNA strand during the process of DNA replication.

Due to this, there is an increase in the number of nucleotides in the DNA strand.

It can result in the formation of non functional protein (due to change in the codon sequence).

Option 1) correctly depicts insertion mutation as there is an addition of T (thymine) at ninth position of the original DNA.

Thus, 1) is the right answer.

Answer 2

The answer is TTCGAATCTGTATGAC. Insertion mutation are types of mutation where one or more nucleotide base pairs are inserted to a chromosomes or a DNA sequence. They result from the addition of extra nucleotides in a DNA sequence or chromosome. When one or more nucleotides are inserted in the genetic sequence, the reading frame is disrupted during transcription, and eventually, translation. This may result in an altered sequence of amino acids, extra amino acid in a chain, or premature termination.