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Exam 4: Patterns of Inheritance and the Cellular Basis of Reproduction and Inheritance

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Question 1

Multiple Choice

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Bacteria and archaea reproduce by a type of cell division called

A) binary fission.
B) asexual reproduction.
C) division.
D) sexual reproduction.

E) C) and D)
F) B) and C)

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Question 2

Multiple Choice

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Fertilization of a plant with the pollen of another plant is called

A) cross-breeding.
B) self-fertilization.
C) cross-fertilization.
D) irregular fertilization.

E) None of the above
F) A) and B)

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C

Question 3

Multiple Choice

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The genetic material is duplicated during

An organism that has two different alleles for a gene is

Which of the following is not a genetic testing method used on an unborn fetus?

After reading the paragraphs below, answer the question(s) that follow(s) . Mr. and Mrs. Smith have three sons in elementary school. Two of their children are progressing normally, but their last son, Charles, has been much slower than his siblings at developing speech and language skills. His parents are concerned that he has a learning disability and decide to investigate further. Since some learning disabilities can be genetically based, their pediatrician recommends a chromosomal analysis. The results show that Charles has a trisomy of the sex chromosomes, diagnosed as XYY, which is caused by nondisjunction in the formation of the father's sperm. The nondisjunction resulted in an extra copy of the Y chromosome. The extra copy was passed on to Charles during fertilization. Most often, this chromosomal change causes no unusual physical features or medical problems, but those with trisomy of the sex chromosomes do have a higher than normal risk of delays in learning development. -An extra copy of the Y chromosome would be expected to cause problems because

After reading the paragraph below, answer the question(s) that follow(s) . A woman has been trying to conceive for several years, unsuccessfully. At a fertility clinic, they discover that she has blocked fallopian tubes. Using modern technologies, some of her eggs are removed, fertilized with her husband's sperm, and implanted into her uterus. The procedure is successful, but the couple discovers that their new son is colourblind and has blood type O. The woman claims that the child can't be theirs since she has blood type A and her husband has type B. Also, neither parent is colourblind, although one grandparent (the woman's father) is also colourblind. -With respect to the possibility that the wrong fertilized egg had been implanted accidentally, you would explain that