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Identical twins are not so identical

Identical twins are not so identical eA7ex
A new study shows that while identical twins can look perfectly alike, it is not a perfect similarity. They are not clones of each other. Scientists at the University of Iceland analyzed the DNA from 387 pairs of identical twins - babies born from a single fertilized egg. The scientists compared the DNA with that of the twins' parents and children. The geneticists looked for mutations in the early stages of development. A mutation is a tiny change in the sequence of the DNA that can occur when a cell divides. This change causes a slight difference in the DNA replication process. A single, tiny change can create differences in height, intelligence, eye colour and even in susceptibility to disease. The study shows that identical twins do not share totally identical DNA. In about 15 per cent of identical twin pairs, one twin carried a "substantial" number of mutations that the other did not share. The scientists say this difference is important as it sheds light on the "nature versus nurture" debate. This is whether human behaviour is determined by the environment, socialization and upbringing, or by a person's genes. The research shows that this tiny difference, and not environmental factors, could be the reason why one twin develops different behavioural characteristics or medical conditions. Professor Kari Stefansson said a genetic mutation may be the source of a given disease or trait.
A new study
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shows
that while
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identical
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twins
can look
perfectly
alike, it is not a perfect similarity. They are not clones of each other. Scientists at the University of Iceland analyzed the DNA from 387 pairs of
You use this word too often, consider replacing it with
identical
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twins
Consider using an m-dash if you do not want to join two words.
-
babies born from a single fertilized egg. The scientists compared the DNA with that of the twins' parents and children. The geneticists looked for
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mutations
in the early stages of development. A
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mutation
is a tiny
This phrase/word (depending on the context) can be potentially replaced with :
change
in the sequence of the DNA that can occur when a cell divides. This
This phrase/word (depending on the context) can be potentially replaced with :
change
causes a slight
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difference
in the DNA replication process. A single, tiny
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change
can create
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differences
in height, intelligence, eye
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colour
and even in susceptibility to disease.

The study
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shows
that
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identical
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twins
do not share
totally
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identical
DNA. In about 15 per cent of
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identical
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twin
pairs, one
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twin
carried a
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"
substantial
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"
number of
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mutations
that the other did not share. The scientists say this
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difference
is
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important
as it sheds light on the
Use a smart opening quote here: "“".
"
nature versus nurture
Use a smart closing quote here: "”".
"
debate. This is whether human
Possible spelling mistake. 'behaviour' is British English.
behaviour
is determined
by the environment, socialization and upbringing, or by a person's genes. The research
This phrase/word (depending on the context) can be potentially replaced with :
shows
that this tiny
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difference
, and not environmental factors, could be the reason why one
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twin
develops
This phrase/word is too simple and can be replaced with:
different
Possible spelling mistake. 'behavioural' is British English.
behavioural
characteristics or medical conditions. Professor Kari
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Stefansson
said a genetic
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mutation
may be the source of a
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given
disease or trait.
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IELTS essay Identical twins are not so identical

Essay
  American English
2 paragraphs
232 words
This writing has been penalized,
text can't be
less than 250 words in Task 2
and less than 150 words in Task 1
5.0
Overall Band Score
Coherence and Cohesion: 5.5
  • Structure your answers in logical paragraphs
  • ?
    One main idea per paragraph
  • Include an introduction and conclusion
  • Support main points with an explanation and then an example
  • Use cohesive linking words accurately and appropriately
  • Vary your linking phrases using synonyms
Lexical Resource: 5.0
  • Try to vary your vocabulary using accurate synonyms
  • Use less common question specific words that accurately convey meaning
  • Check your work for spelling and word formation mistakes
Grammatical Range: 6.0
  • Use a variety of complex and simple sentences
  • Check your writing for errors
Task Achievement: 5.0
  • Answer all parts of the question
  • ?
    Present relevant ideas
  • Fully explain these ideas
  • Support ideas with relevant, specific examples
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