26 explain why extranuclear genes are not inherited

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26. Explain why extranuclear genes are not inherited in a Mendelian fashion.
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AP Biology 3 Past Free Response Questions 1983: State the conclusions reached by Mendel in his work on the inheritance of characteristics. Explain how each of the following deviates from these conclusions: a. Autosomal linkage b. Sex-linked (X-linked) inheritance c. Polygenic (multiple-gene) inheritance 1988: Discuss Mendel's laws of segregation and independent assortment. Explain how the events of meiosis I account for the observations that led Mendel to formulate these laws. 1996: An organism is heterozygous at two genetic loci on different chromosomes. a) Explain how these alleles are transmitted by the process of mitosis to daughter cells. b) Explain how these alleles are distributed by the process of meiosis to gametes. c) Explain how the behavior of these two pairs of homologous chromosomes during meiosis provides the physical basis for Mendel's two laws of inheritance. 1999: Scientists seeking to determine which molecule is responsible for the transmission of characteristics from one generation to the next knew that the molecule must (1) copy itself precisely, (2) be stable but able to be changed, and (3) be complex enough to determine the organism’s phenotype. a) Explain how DNA meets each of the three criteria stated above. b) Select ONE of the criteria stated above and describe experimental evidence used to determine that DNA is the hereditary material. The test FRQ may pull from one or more of the above questions. It will probably NOT be an exact match.
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