ch09_review - Klug, Concepts of Genetics 8/e Chapter 9...

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Klug, Concepts of Genetics 8/e Chapter 9 MEDIA REVIEW QUESTIONS 1. Leaf coloration in the four-o'clock plant, Mirabilis jalapa , was one of the first examples of cytoplasmic inheritance. If ovules from a white-leafed branch are pollinated with pollen from a green-leafed branch, what phenotypes will be observed in the progeny? a. All green-leafed progeny b.All variegated-leafed progeny c. All white-leafed progeny d.White- and green-leafed progeny 2. Leaf coloration in the four-o'clock plant, Mirabilis jalapa , was one of the first examples of cytoplasmic inheritance. If ovules from a variegated-leafed branch are pollinated with pollen from a variegated-leafed branch, what phenotypes will be observed in the progeny? a. White-, green- and variegated-leafed progeny b.White- and green-leafed progeny c. All variegated-leafed progeny d.All white-leafed progeny 3. True or false? In the yeast Saccharomyces cerevisiae , suppressive petite mutants exhibit Mendelian inheritance because they result from nuclear mutations. 4. Which of the following statements about the endosymbiotic theory is false? a. The ancestral bacteria from which mitochondria and chloroplasts are derived were capable of photosynthesis and aerobic respiration. b.Mitochondria and chloroplasts arose independently from free-living bacteria. c. The entire genome of the ancestral bacteria has been preserved in present-day mitochondria and chloroplasts. d.Eukaryotic cells engulfed the ancestral bacteria from which mitochondria and chloroplasts are derived, and the two entities formed a symbiotic relationship. 5. Which term describes the condition in which cells have a variable mixture of organelles with different genetic origins? a. Heteroduplex b.Heterozygous c. Heteroplasmy d.Heterokaryon 6. Which human genetic disease does not exhibit cytoplasmic maternal inheritance? a. Kearns-Sayre syndrome b.Hemophilia c. Myoclonic epilepsy d.Leber's hereditary optic neuropathy 7. Which of the following is an example of infectious heredity? a. High female sex ratio in Drosophila bifasciata and Drosophila willistoni b.Shell coiling in Limnaea peregra c. Petite mutations in Saccharomyces cerevisiae d.Variegation in Mirabilis jalapa 8. The direction of coiling in the snail Limnaea peregra is determined by the genotype of the maternal parent producing the egg, regardless of the progeny's genotype. Which of the following statements correctly describes this trait? a. The trait is an example of maternal influence. b.It is an X-linked trait. c. The trait is an example of maternal inheritance.
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d.It is a sex-influenced trait. 9. Which of the following crosses could produce a left-hand coiled shell heterozygote in the snail Limnaea peregra , if the gene D , which codes for right-hand coiled shells, is dominant to the gene d , which codes for left-hand coiled shells? a. Left-hand coiled
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This test prep was uploaded on 04/06/2008 for the course BIOL 313 taught by Professor Vollbrecht during the Spring '08 term at Iowa State.

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ch09_review - Klug, Concepts of Genetics 8/e Chapter 9...

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