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Scientists Have Found That Certain Genes Become Turned on or Off

question 141

Multiple Choice

Scientists have found that certain genes become turned on or off as a result of exercise mainly through a process called ________, in which tiny atoms attached themselves to the outside of a gene.

Understand the development and evolutionary significance of the Hox gene clusters in vertebrates.
Explain the evolutionary origins of tetrapods from ray-finned fishes.
Describe the concept of convergent evolution and its role in the similarities between placental and marsupial mammals.
Understand the phylogenetic relationship between echinoderms and chordates.

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