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The Human Genome A Review

The Human Genome A Review. Dr. Howell Biology I Blacksburg High School. Look at diagram A below. What process is represented?. Meiosis. Look at diagrams B and C below. What is this called?. Nondisjunction. How many TOTAL chromosomes does a human have?. 46.

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The Human Genome A Review

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  1. The Human GenomeA Review Dr. Howell Biology I Blacksburg High School

  2. Look at diagram A below. What process is represented? Meiosis

  3. Look at diagrams B and C below. What is this called? Nondisjunction

  4. How many TOTAL chromosomes does a human have? 46

  5. How many AUTOSOMES does a human have total? 44

  6. How many SEX CHROMOSOMES does a human have? 2

  7. What sex chromosomes does a male have? A female? XY and XX

  8. What is sickle cell disease? A blood disease where the body produces an abnormal hemoglobin, causing red blood cells to form a “sickle” shape.

  9. Match the disease to its chromosomal disorder: Turner Syndrome Klinefelter Syndrome Down syndrome Person has 3 #21 chromosomes Female with only one X chromosome Male with XXY

  10. What sex is the individual in this karyotype? Male

  11. What is a pedigree? A chart that traces the inheritance of traits in a family

  12. In a pedigree: What does a square represent? What does a circle represent? What does a shaded shape mean? What does a horizontal line between two people mean? What does a vertical line coming off of married people mean? The children The person has the disease A male A female The are married

  13. What is/are the possible genotype(s) of individual # 3 below? Ff

  14. What is the possible genotype(s) of individual #12 below: Either FF or Ff

  15. An autosomal recessive disorder means that the affected individuals will have what genotype? Could have any of the genotypes Either FF or Ff FF Ff ff

  16. What genotype(s) does an individual with an autosomal dominant disease have? Could have any of these genotypes PP pp Pp Either PP or Pp

  17. What is (are) the possible genotype(s) of individual #2? Pp

  18. What is (are) the possible genotype(s) of individual #7? pp

  19. Which chromosome are most sex-linked genes found? X chromosome

  20. What sex – male or female – is most affected by sex-linked genes? Male because he only has one X chromosome, so anything on it will be expressed.

  21. What is gene therapy? The process of attempting to cure genetic disorders by placing copies of healthy genes into cells that lack them.

  22. What are polygenic traits? Ones that are controlled by more than one gene, such as skin color.

  23. What disease does this karyotype indicate? Klinefelter Syndrome

  24. What disease does this karyotype indicate? Down Syndrome

  25. What disease does this karyotype indicate? Turner Syndrome

  26. What are some uses for DNA fingerprinting? Trace ancestry Match evidence/suspects at crime scene Figuring out paternity

  27. Who committed the crime? John

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