SOLVED

21. Implantation of a fertilized egg in the uterine wall typically occurs: a. within 1 to 2 hours following fertilization b. within 12 to 24 hours following fertilization c. within 2 to 3 days following fertilization d. about one week following fertilization 22. If Susanna was worried that she has just become pregnant as the result of intercourse last night, and she wants to take a drug to make sure that implantation of the fertilized ovum does not occur, she should be sure to take this drug: a. immediately, because implantation occurs in the first day after fertilization b. within 24 hours, because implantation occurs in the first 24 to 36 hours after fertilization c. within 2 days, because implantation occurs about 3 days following fertilization d. within 5-6 days, because implantation occurs about 1 week following fertilization 2 If Jacob was going to draw a picture of a blastula, the shape he would produce would be most like which of the following? a. a straight line b. a square c. a circle d. a “glob” that looks like the shape of Lake Michigan 24. If a pregnancy test can detect pregnancy within two weeks after fertilization, it most likely works by: a. detecting the hormone human chorionic gonadotropin in the woman’s urine b. detecting a rise in the woman’s body temperature from 98.6 to about 99.3 c. detecting the presence of a much higher percentage of alpha brain waves during the woman’s sleep cycles d. detecting a dramatic increase in the acidity of the woman’s urine 25. According to the text, about what percent of fertilized eggs are lost within the first two weeks following conception: a. 2-3% b. 5-9% c. 25% d. 60-70% 26. Janae wants to become pregnant and believes that fertilization has taken place. However, she does not want to get her hopes up too quickly because she knows that about _______ of fertilized ova are lost during the first two weeks of pregnancy. a. 5% b. 10-15% c. a third d. two-thirds 27. Combining the percentage of fertilized eggs that are lost within the first two weeks with the percent that are aborted or lost due to miscarriage in the remaining months of pregnancy, you should conclude that about ________ of all fertilized eggs eventually result in the birth of a baby. a. 20% b. half c. two-thirds d. almost 90% 28. Dr. Shepard is an advocate for laws that would prohibit abortion under all circumstances. To make her case, she argues that, of pregnancies that survive the first few weeks, over half are terminated by an abortion. You know that Dr. Shepard’s argument is false because the percentage of pregnancies that are terminated by abortion after the first few weeks is actually: a. 2% b. 6% c. 19% d. 36% 29. Suppose that prior to implantation, Janetha’s fertilized egg divides into two cells, and these cells then split entirely. If Janetha’s pregnancy results in a healthy birth, you would know that she would have: a. a girl b. a boy c. a girl and a boy d. twins with identical genetic characteristics 30. The similarity of genetic traits carried by two individuals who are dizygotic twins would be most comparable to which of the following pairs of individuals? a. their mother and father b. any two siblings, regardless of gender c. two clones of the same person d. two unrelated individuals