Some animals can become infected with multiple influenza virus strains usually associated with other animals. Which statement below describes the result of these infections?
A. The viral genomes within the host cells can become recombined.
B. A new novel strain of flu may be produced, for which the human population has no immunity.
C. Major genetic variations in the flu viruses can be reproduced.
D. All of the choices are correct.
Answer: D
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What are the ecological consequences of acidification of rain and oceans?
A. They improve the health of ecosystems. B. Acid rain damages ecosystems, but ocean acidification improves the health of oceans. C. They damage the health of ecosystems. D. They do not have any consequences on ecosystems.
A species that three sets of homologous chromosomes can have __ different combinations of chromosomes in its gametes?
A. 3 B. 6 C. 8 D. 27 E. 64
f you see a plant with a 4-petal flower and branched leaves, you can deduce that this plant is a type of ________.
A. angiosperm monocot B. gymnosperm monocot C. angiosperm dicot D. gymnosperm dicot
Beginning with the simplest level of structure, which order of organization of genetic material is CORRECT?
A. nucleotide, DNA, chromosome, gene, genome B. DNA, nucleotide, gene, genome, chromosome C. nucleotide, DNA, gene, genome, chromosome D. DNA, nucleotide, gene, chromosome, genome E. nucleotide, DNA, gene, chromosome, genome