• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13

Natural variation

Extracts from this document...


1 Final Amarah Adam Biology- Natural variation Natural variation- foot size between boys and girls Abstract The purpose of the report is to analyze the two major factors that affect how we develop which are genetic and environmental variations. I have presented my data in a table, line graph and bar chart. I also composed a questionnaire. My major conclusions are that genes mostly affect the child's physical features. Introduction I am carrying out this experiment to see the difference in foot sizes of children. In the case of genetic variation, genes are a section of DNA within the chromosomes of a cell, which give the instructions to a cell about how to make a protein. Inherited information controls how an organism develops. Genes pass on information from the parents to the next generation and in this way, they affect our features. The environment also plays a major role in the development of humans or Homo sapiens. For example, when we spend more time in the sun, our skin gets darker. Diet choices and fitness also have an effect on our features. Hypothesis: I expect that maybe, footwear can lead to impaired growth. I also think that the length of their foot will depend on their inherited genes. ...read more.


good Good average bad Large or small body mass Large average small Exercise Rarely sometimes often Height foot size Age of mother at the birth of the child How many other children Profession Profession Was the child full term or premature Full term premature If premature how early was the baby? General diet of mother during pregnancy 6 Results: Table of my results 2002 Boys foot size (cm) Girls foot size (cm) Boys average Girls average January 17 20 18.5 February 19 20.5 18.5 19.75 18.5 March 19 19 April 19.3 23 17 18.4 19.77 18.4 May June 19.5 17.4 18.45 July 17.9 18.5 17.5 18.2 17.5 August 20 18.7 19.35 September 20 18 19.5 18.5 19 19 October 16.6 16.6 November 17.3 20.7 17 18.2 19 17.6 December 16.7 17 16.7 17 2003 January 19 15.5 19 15.5 Figure 2 8 Figure 4 9 Figure 3 shows that overall; there is not a great deal of difference in foot sizes of boys and girls of all ages. However the youngest child, born in 2003, seems to have a larger foot size than most girls. But some girls have larger foot sizes than boys. So there is zero correlation between age and foot size. ...read more.


However, this could just be 11 because of preconceived ideas on my part therefore it would need a more thorough investigative report. Also the preliminary results showed that the children, who were questioned, didn't know how to answer some of the questions, even simple questions like their ages ,so I asked the parents instead. This was helpful as it gave me a better understanding of how genetics work. However it was difficult to persuade the parents to take time out and answer the questionnaire. To overcome this, other staff members helped me to ask the parents questions as they only had so much time. I also found it difficult to ask the parents questions as they were from different ethnic backgrounds so others helped me translate the questions in their language. I also used the staff to help write down the answers as some of the parents could not write because they lacked English. I would have liked to have measured both feet, but there was only a limited amount of time, the centre let me measure the children. In future it would be interesting to look at variation of the left and right foot. Reference and Literature cited The NEC biology file GCSE Biology textbook ?? ?? ?? ?? Amarah Adam ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Variation and Inheritance section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Here's what a star student thought of this essay

3 star(s)

Response to the question

The candidate included a reference section which is good for a gcse level candidate. The investigation was carried out adequately and the candidate presented the information in a clear and concise way. The lack of scientific explanations behind the hypothesis ...

Read full review

Response to the question

The candidate included a reference section which is good for a gcse level candidate. The investigation was carried out adequately and the candidate presented the information in a clear and concise way. The lack of scientific explanations behind the hypothesis and evaluation is the main thing that let this candidate down.

Level of analysis

The questionnaire used was adequate and would have addressed a range of confounding factors if the data had been presented in the right way. The science behind the experiment used was quite limited and the candidate could have included evidence of larger scientific understanding behind the topic to gain a higher mark. The evaluation is good and tries to comment on a range of improvements.

Quality of writing

Sometimes the grammar plural of words are wrongly used, and some wrong words are used in some instances resulting in wrong grammar. Spelling and punctuation seems accurate.

Did you find this review helpful? Join our team of reviewers and help other students learn

Reviewed by skatealexia 16/04/2012

Read less
Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Variation and Inheritance essays

  1. Marked by a teacher

    Biology Case Study

    4 star(s)

    spreading and kill it or whether it will simply make it worse. This test will be carried out many times and until t works the variables will keep changing until a positive outcome. If the drug doesn't seem to work then the scientist will start all over again until it is successful.

  2. Marked by a teacher

    Evolution, what, and any evidence is there?

    4 star(s)

    But I have found another source that cross references it. Its from http://www.talkorigins.org/faqs/modern-synthesis.html By Laurence Moran. And I think that this source is quite reliable and is a good cross reference to the first one. The web site also has other topics on it and links to other web sites that seem reliable as well.

  1. Marked by a teacher

    Research in Genetic Engineering Should Be Halted. Discuss

    3 star(s)

    Agronomists have found that although many non-native natural species brought to the United Sates have adapted, others have been found to be destructive with other species. The gypsy moth, kudzu vine, Dutch elm disease and chestnut blight are examples. As seen in Jurassic Park and in such experiments, humans do not have the power to "play God."

  2. Marked by a teacher

    Cloning. Should it be banned? I will explain all the different types of cloning ...

    Cloning may make it possible to reproduce a certain trait in human beings. We will be able to produce people with certain qualities, human beings with particular desirable traits, thus making human beings a man-made being; often known as designer babies!

  1. The causes and consequences of variation

    A person who only shows the sickle cell trait (is heterozygous for the disease) benefits from the mutation if they are living in an area where malaria is a problem, as it makes them immune to the malaria parasite. However, those with the disease generally suffer from pain in joints, kidney damage and eventually death.

  2. Is cloning the way of the future

    * Cloning might have a detrimental effect family relationship. However the debate over cloning has more pros out weighting the cons, giving us a over site of the many advantages cloning has and the effects of it as well. Cloning has many ups and downs nevertheless there are many different ways in which it can be used to adapt and analyse new ways of medicine.

  1. What is surrogacy and why might it be used

    Give arguments that religious believers from two traditions might give for and against genetic engineering. The phrase genetic engineering refers to the artificial manipulation, modification and recombination of the natural world in a way that is perceived to be beneficial to human beings.

  2. Human cloning is most notably one of the most controversial issues in medical science.

    ADVANTAGES OF HUMAN CLONING Unfortunately, many couples have difficulties having children, and sometimes it is impossible for couples to have children of their own because they are infertile. Approximately one out of eight couples are infertile in Canada. (Liberal Party of Canada, 2002, http://www.liberal.ca/lpc/initiatives.a- spx?site=initiatives&initiatives=309).

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work