A DNA segment is changed from AATTAG to AAATAG. What type of mutation is this and what is its effect on the genetic variation of a population?

A.
The mutation is a substitution which causes a decrease in the genetic variation of a population.

B.
The mutation is an insertion which causes a decrease in the genetic variation of a population.

C.
The mutation is an insertion which causes an increase in the genetic variation of a population.

D.
The mutation is a substitution which causes an increase in genetic variation of a population.

Respuesta :

A dna segment is changed a very good time in the world he answer is a

The mutation from AATTAG to AAATAG is a substitution which causes an increase in genetic variation of a population.

MUTATION:

  • Mutation refers to any change in the nucleotide sequence of DNA molecule. Mutation can be of different types depending on how it occurs.

  • A substitution mutation is that in which one or more nucleotide base is replaced by another in the sequence.

  • In this question, an original sequence of DNA is given as AATTAG. It was mutated to AAATAG via the replacement of 'T' with 'A'. This means that it is a substitution mutation.

  • However, this mutation will cause an increase in the genetic variation i.e. difference in a population.

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