Where Do Blue Eyes Come From Biology Summary
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Humans have many phenotypic variations in eye color which is determined by multiple genes. So far, up to 16 genes have been associated with eye color inheritance. However, scientists from the Institute of Forensic Genetics at the University of Copenhagen discovered that the reason for blue eyes (Links to an external site.) mainly lies in two genes: OCA2 (Links to an external site.) and HERC2 (Links to an external site.). This way they have shown that the earlier belief that blue eye color is a simple recessive trait is incorrect.
Originally, all humans had brown eyes, although genetic variation relating to a gene called OCA2 resulted in changes to the amount of pigment produced by different individuals, resulting in the emergence of different shades of brown. Scientists studying the genetics of eye color (Links to an external site.) have identified that a mutation to a separate, nearby gene called HERC2 is the cause of blue eyes. This alteration switches off OCA2, the gene that determines the amount of the brown pigment melanin that we make.
Today, around 20-40% of European people have blue eyes. Scientist discovered that more than 99.9 per cent of blue-eyed people who volunteered to have their DNA analyzed have the same tiny mutation in the gene that determines the color of the iris.
Scientists concluded that every blue-eyed person on the world today can trace their ancestry back to a single European who probably lived about 10,000 years ago in the Black Sea region and who first developed a specific mutation that accounts for the now widespread iris coloration.
Besides your summary, include an answer for the following prompts:
Prompt 1)Tell if there are blue eyes in your family and if you have been able to trace it back to a certain relaive.
Prompt 2) My sister, Anna, and her husband, Herbie, have a blue-eyed daughter, Jamie. Anna and Herbie both have brown eyes. Which is most likely true: a) Jamie is adopted, b) Jamie is NOT Herbie’s biological daughter c) or explain how it is possible for Annie and Herbie to have a blue-eyed daughter.Where Do Blue Eyes Come From Biology Summary
RUBRIC
Excellent Quality
95-100%
Introduction 45-41 points
The background and significance of the problem and a clear statement of the research purpose is provided. The search history is mentioned.
Literature Support
91-84 points
The background and significance of the problem and a clear statement of the research purpose is provided. The search history is mentioned.
Methodology
58-53 points
Content is well-organized with headings for each slide and bulleted lists to group related material as needed. Use of font, color, graphics, effects, etc. to enhance readability and presentation content is excellent. Length requirements of 10 slides/pages or less is met.
Average Score
50-85%
40-38 points
More depth/detail for the background and significance is needed, or the research detail is not clear. No search history information is provided.
83-76 points
Review of relevant theoretical literature is evident, but there is little integration of studies into concepts related to problem. Review is partially focused and organized. Supporting and opposing research are included. Summary of information presented is included. Conclusion may not contain a biblical integration.
52-49 points
Content is somewhat organized, but no structure is apparent. The use of font, color, graphics, effects, etc. is occasionally detracting to the presentation content. Length requirements may not be met.
Poor Quality
0-45%
37-1 points
The background and/or significance are missing. No search history information is provided.
75-1 points
Review of relevant theoretical literature is evident, but there is no integration of studies into concepts related to problem. Review is partially focused and organized. Supporting and opposing research are not included in the summary of information presented. Conclusion does not contain a biblical integration.
48-1 points
There is no clear or logical organizational structure. No logical sequence is apparent. The use of font, color, graphics, effects etc. is often detracting to the presentation content. Length requirements may not be met
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Where Do Blue Eyes Come From Biology Summary