Ch.9 HW - E) None of the above TRUE/ FALSE: 1)...

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Ch. 9 HW 092909 MCQs: 1) Which of the following organelles are involved in the general category of organelle heredity? A) mitochondria and chloroplasts B) R factors C) Lysosomes and peroxisomes D) Factors and episomes E) Golgi and rough endoplasmic reticulum 2) The term heteroplasmy refers to which of the following? A) cells with a variable mixture of normal and abnormal organelles B) heterozygous individuals with more than one gene pair involved C) conditions where the germ plasm is a mixture of dominant and recessive genes D) a circumstance that is homologous to incomplete dominance E) various stages of development of mitochondria and chloroplasts 3) One explanation for organelle inheritance is that A) Mitochondria and chloroplasts lack DNA and are therefore dependent on the maternal, cytoplasmic contributions. B) Mitochondria and chloroplasts have DNA that is subject to mutation C) Organelles such as mitochondria are always wild-type D) Chloroplasts are completely dependent on the nuclear genome for components
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Unformatted text preview: E) None of the above TRUE/ FALSE: 1) Mitochondrial mutations are passed equally to offspring by both males and females. T/ F 2) It is safe to say that a maternal effect is caused by the genotype, not the phenotype, of the parent producing the egg. T/ F 3) tRNAs and rRNAs are known to be encoded by mitochondrial DNA. T/ F Short questions: 1) Briefly describe the general structures of mitochondrial and chloroplast DNA. How are they similar and how do they differ? 2) What is the endosymbiotic theory? How does it help to explain some of the characteristics of mitochondria and chloroplast? 3) The human mitochondrial genome encodes only 22 tRNAs, whereas at least 32 tRNAs are required for cytoplasmic translation. Why are fewer tRNAs needed in mitochondria? 4) What are the different characteristics of disorders resulting from mitochondrial mutation? Give two examples....
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Ch.9 HW - E) None of the above TRUE/ FALSE: 1)...

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