Gap Fill - Identical Twins - Level 4


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   alike      change      clones      development      DNA      easy      height      mutations      sequence      while  

Paragraph 1

A study shows that identical twins look , they are not . Scientists analyzed DNA from 387 pairs of identical twins. They looked for in the early stages of . A mutation is a change in the of the DNA. This can occur when a cell splits. A can cause slight differences in the when it splits. A tiny change can create differences in , intelligence, eye colour and in how it is to catch a disease.

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