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CH 11 Warm Up #8 02/09

CH 11 Warm Up #8 02/09. What do you call a chart that shows how parents and offspring are related? Who determines a baby’s sex ? (dad’s sperm or mom’s egg?) TRUE/FALSE : Sex-linked traits appear only on the “X” chromosome

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CH 11 Warm Up #8 02/09

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  1. CH 11 Warm Up #8 02/09 • What do you call a chart that shows how parents and offspring are related? • Who determines a baby’s sex? (dad’s sperm or mom’s egg?) • TRUE/FALSE : Sex-linked traits appear only on the “X” chromosome • What was one advantage of sexual reproduction? (Hint, think about the Genop lab) • Why are males more likely to have genetic diseases than females?

  2. Agenda 2/9 • Notes: Intro to genetic diseases • Genetic diseases investigation • Share-out your findings

  3. I 1 2 II 1 4 3 2 III 1 2 Notes #7 Genetic Diseases • Genetic disease: A disease passed from parent to offspring through DNA

  4. They could be caused by several things including • Extra chromosome (Down Syndrome) • Missingchromosome (Turner’s Syndrome)

  5. 2 EXAMPLES OF GENETIC DISEASES WE CAN DETECT WITH KARYOTYPING 1. Trisomy 21 (Down Syndrome) Symptoms: distinct facial features (unusually shaped eyes, flattened face, small head), severe learning disabilities Cause: An extra copy of 21st chromosome

  6. Down Syndrome • Nondisjunction: Chromosomes do not separate during meiosis • Trisomy: set of 3 chromosomes • Total of 47 chromosomes

  7. 2. Turner’s syndrome Symptoms: Short in height, non-functioning ovaries, wide neck Cause: missing copy of the “X” chromosome • Total of 45 chromosomes

  8. DETECTING OTHER GENETIC DISEASES • Other tests that can be used to detect genetic diseases • -DNA sequencing to look for certain genes • -Chemical tests to look at proteins being made

  9. CH 11 Genetic Disease Research Lab • Working in pairs • Pick 1 genetic disease/disorder to investigate • Follow the directions & use your time wisely • You’ll be reporting-out close to the end of the hour!

  10. Genetic Disease Research Share-out • Pairs called on at random • Keep track of their facts on the back of your notes!

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