Which of the following mutations would most likely be identified as a chromosomal translocation?

A sequence of bases encodes for genes XXY. A portion of another chromosome breaks off and inserts within genes XYZ.

A mutation occurs while copying a chromosome. Instead of reading EFGHI, the chromosome reads EFGFGHI.

The genetic sequence is MNOPQ. A mutation occurs and the sequence of bases that encodes for gene N is not copied.

The sequence of bases on the mRNA reads CUU and codes for the amino acid Leucine. A mutation occurs and the mRNA sequence changes to CCU and now codes for the amino acid Proline.

you are certainly talking about this picture:

a: is the label of the white square, it is showing the  replication fork, formed by helicase (d) ==> so it is the site of dna separation and replication 

b: is a new dna brand that is following directly the replication fork, so it is continuous ==> built continuously from 5' to 3

c: dna polymerase cannot replicate dna on its own, it needs the of their proteins, and one of them plays the role of a clamp which fixes  the dna with the dna template and increases  the processivity of the enzyme. ==>   stops polymerase from falling off the  template.

d: is the enzyme responsible for forming the replication fork (helicase) ==> unwinds and separates dna into two strands

e: is the delayed strand, it is built  in the opposite sense of the helicase, so dna will be built in fragments ==> built  fragments from 5' to 3 joins

and finally f: is the enzyme that builds  the new dna strand (dna polymerase) ==>   adds nucleotides to make a new dna helix.

credit: gradman555p98x9p

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