Question

identify the types of mutations represented by change in each DNA sequence

Answer 1

PLATO Answer:

deletion

substitution

insertion

inversion

duplication

translocation

Explanation: ATGC → ATC: G is deleted.

ATGC → ATTC: T is substituted for G.

ATTCGC → ATTCGGC: An extra G is inserted.

ACGT → TGCA: The order of bases is inverted, or reversed.

ATTG → ATTGATTG: The bases ATTG are duplicated.

ATTC (chromosome 1) CGATTC (chromosome 2) → ATCGA (chromosome 1) TCTTC (chromosome 2): TC from chromosome 1 translocates to chromosome 2. CGA from chromosome 2 translocates to chromosome 1.

Answer 2

Mutations are the alteration of the bases that affect the genetic material. In the first sequence, the base G is missing, and hence, it is a deletion mutation.

What is mutation?

Mutations are the modification in the original sequence that affects the codon and the amino acids coding the proteins and may lead to disorders. Mutations can be the point, chromosomal, etc. The types of mutation are:

• In the first sequence, one base "G" is missing, hence, it is deletion mutation.

• In the second sequence, the base "G" is replaced by "T," hence, it is a substitution mutation.

• In the third sequence, an extra "G" is added, hence, it is an insertion mutation.

• In the fourth sequence, the order of the bases is inverted, hence, it is an inversion mutation.

• In the fifth sequence, the bases "ATTG" are repeated, hence, it is a duplication mutation.  

• In the sixth sequence, the base "TC" from chromosome 1 moved to chromosome 2, and "CGA" moved to chromosome 1, hence, it is a translocation mutation.

Learn more about mutation here:

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