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Unformatted text preview: Hybrid Corn on Right Tympanoctomys barrerae , 4n Rat Extra-nuclear gene expression And for our final note on transmission of characteristics from generation to generation, Mendelian inheritance addresses the behavior of genes on chromosomes. Organelles, such as mitochondria and chloroplasts (and all plastids) have small circular pieces of DNA, and that DNA is transcribed and translated within the organelle. Mitochondria and chloroplasts are self-replicating. In sexual reproduction, only the egg cell's cytoplasm is passed to the zygote, so only maternal mitochondrial and chloroplast DNA will be transmitted from generation to generation. Some genetic disorders are traced to mutations in mitochondrial DNA that codes for proteins in the electron transport chain. Mutations in mitochondrial DNA may be one reason cells age....
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This note was uploaded on 12/29/2011 for the course BIO 151 taught by Professor Edwards during the Spring '10 term at SUNY Stony Brook.
- Spring '10