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Concepts of Genetics 11th Edition by William Klug,Michael Cummings,Charlotte Spencer,Michael Palladino
Edition 11ISBN: 9781292139456Concepts of Genetics 11th Edition by William Klug,Michael Cummings,Charlotte Spencer,Michael Palladino
Edition 11ISBN: 9781292139456 Exercise 2
Review the Chapter Concepts list. The first three center around extranuclear inheritance involving DNA in organelles. The fourth involves what is called maternal effect. Write a short essay that distinguishes between organelle heredity and maternal effect.
▪Extranuclear inheritance occurs when phenotypes result from genetic influence other than the biparental transmission of genes located on chromosomes housed within the nucleus.
▪Organelle heredity, an example of extranuclear inheritance, is due to the transmission of genetic information contained in mitochondria or chloroplasts, most often from only one parent.
▪Traits determined by mitochondrial DNA are most often transmitted uniparentally through the maternal gamete, while traits determined by chloroplast DNA may be transmitted uniparentally or biparentally.
▪Mitochondrial mutations have been linked to many human disease conditions as well as to the aging process.
▪Maternal effect, the expression of the maternal nuclear genotype during gametogenesis and during early development, may have a strong influence on the phenotype of an organism.
▪Extranuclear inheritance occurs when phenotypes result from genetic influence other than the biparental transmission of genes located on chromosomes housed within the nucleus.
▪Organelle heredity, an example of extranuclear inheritance, is due to the transmission of genetic information contained in mitochondria or chloroplasts, most often from only one parent.
▪Traits determined by mitochondrial DNA are most often transmitted uniparentally through the maternal gamete, while traits determined by chloroplast DNA may be transmitted uniparentally or biparentally.
▪Mitochondrial mutations have been linked to many human disease conditions as well as to the aging process.
▪Maternal effect, the expression of the maternal nuclear genotype during gametogenesis and during early development, may have a strong influence on the phenotype of an organism.
Explanation
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Maternal affect is the expression of mat...
Concepts of Genetics 11th Edition by William Klug,Michael Cummings,Charlotte Spencer,Michael Palladino
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