Gap Fill - Identical Twins - Level 6

HOW TO PLAY:

  • Choose the correct word from the drop-down menus below.
  • Click the button at the bottom to check your answers.
  • Press the "refresh" button on your browser to play again.

   conditions      difference      difference      light      mutations      reason      source      substantial      totally      upbringing  

Paragraph 2

The study shows that identical twins do not share identical DNA. In about 15 per cent of identical twin pairs, one twin carried a "" number of that the other did not share. The scientists say this is important as it sheds on the "nature versus nurture" debate. This is whether human behaviour is determined by the environment, socialization and , or by a person's genes. The research shows that this tiny , and not environmental factors, could be the why one twin develops different behavioural characteristics or medical . Professor Kari Stefansson said a genetic mutation may be the of a given disease or trait.

Try the sentence jumble.

Back to the identical twins lesson.

Share this lesson

More Free Sites by Sean Banville

Online Activities