A fire devastates all trees in a wide swath of forest. Populations of a species of tree-dwelling frog on either side of the burned area diverge to become separate species. This is an example of _____
Fill in the blank(s) with correct word
allopatric speciation
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Genetic recombination as a result of crossing over occurs more readily between genes that are ____
a. on the sex chromosomes b. near the centromere c. located close together on the same chromosome d. located far apart on the same chromosome e. located on different chromosomes
The feature of "sticky ends" that makes them especially useful in DNA recombination is their ability to
A) bind to DNA and thereby activate transcription. B) bind to ribosomes and thereby activate translation. C) form hydrogen-bonded base pairs with complementary single-stranded stretches of DNA. D) allow plasmids to attach to the main bacterial chromosome.
Which type of life cycle occurs with fungi?
a. Haploid-dominant b. Diploid-dominant c. Alternation of generations d. Meiosis
What makes blood red?
A. globulins B. albumin C. hemoglobin D. fibrinogen E. platelets