Chapter 7 Understanding Heredity
Chapter 7 Understanding Heredity.
Terms to know:
Transfer of traits from parent to child.
How many pairs of Chromosomes do you have?
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Are you an XX or an XY? How is it determined?
When is it determined?
Would you consider controlling the sex of your child?
Sperm spinning involves spinning a sample of semen in a centrifuge. The slightly heavier sperm containing an X chromosome are separated from the lighter Y-containing sperm.
RECESSIVE vs DOMINATE TRAITS Which do you have?
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Fraternal vs. identical twins?
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Would you consider undergoing genetic counseling if you or your partner had a family history or a genetic disorder?
Who Needs a Genetics Counselor?
• A family history of inherited health problems and disorders
• Ultrasound or screening tests suggesting that a disorder may be present
• Becoming pregnant after age 35
• Already having a child with a genetic disorder
• Suffering repeated miscarriage, stillbirth or death of a baby
• Problems with infertility
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