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Review. Reproduction Unit. Female sex cell. ovum. Male sex cell. sperm. Threadlike particles that carry genes. chromosomes. How are identical twins produced?. 1 egg is fertilized and then splits. How are fraternal twins produced?. 2 eggs are fertilized. What carries an inherited trait?.

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Review

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  1. Review Reproduction Unit

  2. Female sex cell

  3. ovum

  4. Male sex cell

  5. sperm

  6. Threadlike particles that carry genes

  7. chromosomes

  8. How are identical twins produced?

  9. 1 egg is fertilized and then splits

  10. How are fraternal twins produced?

  11. 2 eggs are fertilized

  12. What carries an inherited trait?

  13. gene

  14. Which type of birth defect is carried by the female but only shows up in the male child?

  15. Sex-linked birth defect

  16. Describe how down’s syndrome is produced?

  17. Chromosome 21 occurs as a triplet rather than a pair

  18. When a child is born with fetal alcohol syndrome what part of the child is affected?

  19. Physical abnormalities and mental retardation

  20. What is the test called when you withdraw amniotic fluid and test it?

  21. amniocentesis

  22. Which is more strongly influenced by environment weight or body type?

  23. weight

  24. How many chromosomes come from the male sperm?

  25. 23

  26. Fertilization takes place where?

  27. Fallopian tube

  28. Prenatal period lasts how many weeks?

  29. 40 weeks

  30. Where does the fetus grow and develop?

  31. uterus

  32. What is the correct order of prenatal development?

  33. Zygote, embryo, fetus

  34. How much weight should you gain during pregnancy?

  35. 24-30 pounds

  36. Which months does the mother first feel the baby move?

  37. 4th and 5th month

  38. Which trimester is physically most demanding for mom?

  39. 3rd trimester

  40. What complication of pregnancy is high blood pressure and sudden weight gain a sign of?

  41. toxemia

  42. What guards against jolts and keeps fetus at a constant temperature?

  43. Amniotic fluid

  44. Which trimester do drugs do the most harm to the embryo/fetus and greatest chance for birth defects?

  45. 1st trimester

  46. Which month does lightening (the fetus drop into lower pelvis) occur?

  47. 9th month

  48. When the fertilized cell attaches to the uterine wall

  49. implantaion

  50. What is the connection between fetus and placenta?

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