Reference no: EM133404583

1. Alleles that are the same are called ________.

2. Aubrey and Ava are identical twins who were raised in separate homes by their divorced parents. Now, as they enter elementary school, Aubrey shows mild symptoms of phenylketonuria (PKU), but Ava's symptoms are more severe. The girls have different ________ for this disease.

3. Which condition involves an extra chromosome?

4. Alexander has a sex chromosome abnormality. He is very tall, has small testicles, and has never been able to conceive a child with his wife. His personality is rather unreactive. Alexander most likely has ________.

5. During prenatal development, the ________ will become the digestive system.

6. During the period of ________, the mesoderm begins to form.

7. The reason infants and children have such large heads compared to their bodies is described by the ________.

8. The reason infants and children have such large heads compared to their bodies is described by the ________.

9. During which period of prenatal development would exposure to teratogens most likely cause defects to major body structures?

10. Which period begins when a sperm fertilizes an egg?

11. Marsha was in a relatively minor car accident; the embryo in her uterus was not harmed due to the cushioning effect of the ________.

12. Exposure to DES during pregnancy has been linked to ________.

13. When Celina was pregnant, her obstetrician used a needle to obtain a small sample of fluid for analysis to determine the possible presence of genetic abnormalities in the baby. Celina underwent the process of ________.

14. Keira is giving birth and is attempting to pass the placenta. She is in the ________ stage of birth.

15. Which birth complication involves the infant's head being bigger than the pelvis of the mother?

16. The technical term for the fertilized egg just after conception is the________.

17. The emerging field of study concerned with treating prenatal problems before birth is called ________.

18. Jermaine was hiking in the Rocky Mountains for the first time and became sick. At the hospital, he was diagnosed with sickle-cell disease. Jermaine likely has sickle-cell trait, which is a situation where he has a mild form of sickle-cell disease that is exacerbated by vigorous exercise or high altitude. Sickle-cell trait is characterized by:

19. Fetal therapy is most likely to use which of the following tests to assess potential problems with the fetus?

20. Although the cerebral cortex is forming and the mother can feel the fetus moving, the fetus is not yet: