Choose the true statements about the diversity of Darwin's finches on the Galápagos Islands. Check all that apply.
_____ All of the finch species share a common ancestor that colonized the islands.
_____ Prior to the adaptive radiation of finches, there were no unoccupied habitats in the Galápagos Islands.
_____ Competition among finches for food sources led to character displacement of beak shapes.
_____ Beak shape is not an important key innovation.
__X__ All of the finch species share a common ancestor that colonized the islands.
_____ Prior to the adaptive radiation of finches, there were no unoccupied habitats in the Galápagos Islands.
__X__ Competition among finches for food sources led to character displacement of beak shapes.
_____ Beak shape is not an important key innovation.
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White, narrow-tubular, highly fragrant flowers are most likely pollinated by
a. moths. b. butterflies. c. hummingbirds. d. bees. e. flies.
If wolves were now removed from Yellowstone National Park
A) elk populations would increase. B) deer populations would decrease. C) the vegetation would remain unchanged. D) vegetation would increase, providing shelter for smaller animals.
Sequences of DNA assembled by identifying overlaps among smaller DNA segments are known as
A. a contig. B. draft sequences. C. single strand polymorphisms. D. the proteome. E. synteny.
Transfer RNA (tRNA) differs from other types of RNA because it:
A) carries the codons for amino acid sequence of a particular protein. B) carries an amino acid at one end of the molecule and binds with the mRNA with the anticodon at the other end. C) transfers genetic instructions from the cell nucleus to the cytoplasm. D) is made up of amino acids instead of nucleotides.