Transposons, or jumping genes, are DNA elements that move within the genome. In which organismic groups are transposons found?

A) bacteria
B) eukaryotes
C) ancient bacteria
D) mammals
E) all organismic groups


Answer: E

Biology & Microbiology

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Genetic differences are always more important than environmental differences for determining phenotypic outcomes

A. true B. false

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The source of most mitochondrial DNA an organism inherits is ________

A) the nucleus of the sperm B) the nucleus of the egg C) the cytoplasm of the sperm D) the cytoplasm of the egg E) None of these choices

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The structure of DNA was discovered in 

A. 1921. B. 1953. C. 1999. D. 2003.

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When a plant blocks fertilization after recognizing pollen as genetically related, this is called

A. self-incompatibility. B. self-fertilization. C. self-pollination. D. outcrossing.

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