57. A male with a rare autosomal dominant trait maries a phenotypically normal w

Question

57. A male with a rare autosomal dominant trait maries a phenotypically normal woman. What proportion of their children are expected to show the trait? a. None c.½ e. All 58. Which of the following cannot occur with X-linked dominant inheritance for a rare trait? a. An affected man can have a normal son. b. An affected man can pass on the trait to his son. c. An affected woman can have a normal daughter. d. An affected man can pass on the trait to his daughter. e. An affected woman can pass on the trait to both sons and daughters 59. Which of the following is not a difference between mitosis and meiosis? a. Sister chromatids separate during mitosis but not during meiosis. b. Homologous chromosomes pair in meiosis but not in mitosis. c. In mitosis there is one cell division while in meiosis there are two cell divisions. d. Mitosis usually produces two daughter cells while meiosis usually produces four cells. e. The products of mitosis are usually genetically identical but the products of meiosis are genetically different. 60. The Green Revolution relied upon genetic applications to do which of the following? a. Synthesize new drugs b. Provide renewable energy sources c. Expand the world's food production d. Cure certain genetic diseases in humans e. Determine which species are most closely related to humans 61. What is the evidence for early understanding and application of the principles of heredity? a. The concept of the cell theory b. The domestication of plants and animals c. The development of the germ-plasm theory d. The theory of evolution through natural selection e. The proposal that genes are located on chromosomes. 62. The study of the chemical nature of the gene, and how genetic information is replicated and expressed is part of which division of genetics? a. Molecular genetics b. Population genetics c. Diversity genetics d. Pangenesis genetics e. Transmission genetics

Explanation / Answer

57) 1/2 of their childern are expected to show the trait

58) Option B is correct as the affected man cannot pass on the trait to his son.

59) Option A is correct as sister chromatids separate during anaphase in mitosis and in anaphase II in meiosis

60) Option C is correct

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