The mitochondrial DNA can be used to identify a species based upon
A) NADH dehydrogenase sequences.
B) variation in the mitochondrial ribosomes.
C) 648 bp DNA bar code region.
D) leucine codon usage.
E) none of the above
C) 648 bp DNA bar code region.
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Without data from the base composition studies of Chargaff, what might Watson and Crick’s modeling studies have erroneously concluded?
A. Bases could pair with themselves (e.g. A with A, C with C). B. Any purine could pair with any purine. C. Any pyrimidine could pair with any pyrimidine. D. Any purine could pair with any purine and any pyrimidine could pair with any pyrimidine. E. Any purine could pair with any pyrimidine.
Using the table, which of the viruses has linear, single-stranded RNA?
a. herpesvirus
b. influenza virus
c. retrovirus
d. bacteriophages
The cluster of capillaries in a Bowman’s capsule is called the ____
a. loop of Henle b. glomerulus c. distal tubule d. proximal tubule e. afferent vessel
How has climate change altered the mountain pine beetle?
A) They are being outcompeted by the prairie pine beetle. B) They now have two generations per year. C) They have decreased the average elevation of their distribution. D) Their abundance has increased through lack of predators due to mismatched phenology.