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explanation for the observation that females rarely get the disease hemophilia
a female's good X is dominant over her bad X
reasons that biologists use a classification system to group organisms
organisms are numerous, diverse, and often have many different common names
is the same for an organism all over the world and will have one genus name followed by one species identifier
South America, Galapagos Islands
place where Charles Darwin made many observations during his voyage on the Beagle
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