The Example of Ocean and Lake Stickleback Fishes Indicates That

question 12

Multiple Choice

The example of ocean and lake stickleback fishes indicates that morphology can be altered

• A)only by changing the sequences of protein-coding genes.
• B)by altering the expression of a developmental gene in some parts of the body but not others.
• C)by environmental factors (in this case, pollution).
• D)by the elimination of a gene (Pitx1)from a population, which leads to loss of the trait (body armor and spines).

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