Different species of fruit flies occupy each of the islands in the Hawaiian island chain, a group of volcanic islands that formed one after the other
One hypothesis for how the different fruit
fly species formed is that, after each new island was formed, fruit flies from existing islands
colonized it and subsequently diverged. If this hypothesis is correct, it would be an example
of:
A. allopatric speciation by dispersal.
B. allopatric speciation by vicariance.
C. peripatric speciation by vicariance.
D. sympatric speciation by dispersal.
E. sympatric speciation by vicariance.
A
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Missense mutations cause large deletions when they
A) alter a protein's shape and affect its function. B) alter an intron splicing site so that an entire exon is deleted. C) change a triplet codon that does not affect the reading frame. D) invert a segment of a chromosome.
Which trait exemplifies the chaparral regions of California? a. Plants are adapted to occasional fires
b. Lie between deserts and tropical rainforests. c. Plants evolved water conserving mechanisms. d. Receives 25 - 100 centimeters of rainfall per year. e. None of these choices.
The dominant structures of a moss plant are
A. haploid. B. vascular. C. sporophytes. D. true leaves.
Describe how the 3? ends of mature mRNAs are generated
What will be an ideal response?