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Sex-Linked Traits: Color Blindness and Hemophilia

Explore the genetics of color blindness and hemophilia, including inheritance patterns and prevalence. Learn about X-linked traits and disorders affecting males and females. Watch informative videos and view karyotype pictures to deepen your understanding. Visit the provided links for more insights.

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Sex-Linked Traits: Color Blindness and Hemophilia

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  1. Sex Linked Traits

  2. Karyotype pictures

  3. Male and Femals Sex Cells

  4. Karyotypes (video)

  5. Human Genetic Traits (video)

  6. Sex Linked Traits • Genes are found only on the X chromosomes • Disorders (that we will discuss) • Color blind • Hemophilia • XY = Male • XX = Female

  7. Color Blind • Gene represented by a superscript C • Only found on the X chromosome • Can not distinguish reds and greens. The colors appear brown. • 1:12 males 8% of U.S. population • 1:200 females .5% of U.S. population www.ikm.jmu.edu/.../ hemophiliaeurope.html

  8. Color blind (video)

  9. Male XY normal sight XCY colorblind Female XX normal sight XCX or XXC trait carrier XCXC colorblind Possibilities

  10. Stoplights

  11. Colorblind Eye Charts

  12. The color blindness test consists of a set of five charts. Each chart shows a number in one color on a different background color. People with normal color vision will have no problem seeing the numbers on the charts, but people with color blindness will see only random colored dots. Seventy-five percent of color blind people have poor green perception. Of the remaining, 24% have poor redperception, and one percent are affected by a rare tritan type. Statistics for Colorblindness

  13. Hemophilia • Blood does not clot • Represented by a H superscript on the chromosome www.ikm.jmu.edu/.../ hemophiliaeurope.html

  14. Male XY normal blood XHY Hemophilia Female XX normal blood XHX or XXH trait carrier XHXH Hemophilia Possibilities

  15. Royal Family Pedigree

  16. The European Royal Family www.ikm.jmu.edu/.../ hemophiliaeurope.html

  17. Hemophilia (video)

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