Across
- 6. Stronger genes-need only one to pass on the characteristic.
- 7. Vision, height, weight, blood type, and eye color are factors determined by what?
- 8. A birth defect that occurs when a mother drinks alcohol while pregnant.
- 13. A prenatal test that utilizes sound waves to view the baby.
- 15. Twins that are produced from two eggs and two sperm
- 16. Pregnant women shouldn't be exposed to cat feces because of the risk of what?
- 17. A birth defect where the child's body can't process a certain protein. A special diet must be followed.
Down
- 1. An x-linked birth defect that causes muscles to deteriorate.
- 2. The number of chromosomes each mature sperm and egg cell contributes.
- 3. An XY combination of chromosomes produces a _____.
- 4. Twins that are produced from one egg and one sperm
- 5. When identical twins are not completely separated.
- 9. A prenatal test where a needle is inserted through the abdominal wall and into the uterus withdrawing some amniotic fluid to detect birth defects.
- 10. Weaker genes-will only produce a trait when passed on by both parents.
- 11. Birth defects that are carried by the mother but passed on to the son.
- 12. A birth defect where the occurs when a child receives and extra chromosome 21.
- 14. A birth defect where there is a separate in the child's lip.
- 15. Which vitamin, when taken before and during early pregnancy, can help to decrease the risk of neural tube defects like spina bifida in the baby?