-In this phylogeny feather pattern on the head is the trait used to separate the sparrows into groups. DNA analysis suggests a different phylogeny that places white-crowned birds and golden-crowned birds more closely together. Therefore, what process results in the striped pattern on the head?
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The Food and Drug Administration, a federal agency of the United States responsible for protecting and promoting public health through the control and supervision of food safety, tobacco products, dietary supplements, prescription and over-the-counter pharmaceutical drugs, vaccines, biopharmaceuticals, medical devices, and veterinary products.
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