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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