Before 1970, what was the basis for the biological classification system?
A) Three kingdoms: Bacteria, Animalia, and Plantae
B) Five kingdoms: Monera, Protista, Fungi, Animalia, and Plantae
C) Two kingdoms: Animalia and Plantae
D) Two kingdoms: Monera and Animalia
E) Two kingdoms: Bacteria and Eukarya
C
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The term "phage" is generally reserved for the viruses that infect
A) animals. B) plants. C) bacteria. D) multiple species.
Each unique combination of nucleotides on a Y chromosome constitutes a Y-chromosome:
A. mutation. B. mutation sequence. C. haploid mutation. D. haploid genotype. E. haploid sequence.
Deserts typically form at __________ latitude where
__________. a. 30 degrees; warm dry air descends b. 60 degrees; warm dry air descends c. 0 degrees; there is intense sunlight d. 60 degrees; warm dry air ascends e. 75 degrees; rising air picks up moisture
Morgan's analysis of a white-eyed male Drosophila mutation helped explain __________
A) autosomal dominance B) random mutation C) crossing over D) independent assortment E) X-linked inheritance