The primary cause of biodiversity loss is
A. predation.
B. parasitism.
C. genetic mutation.
D. habitat destruction.
E. global warming.
D. habitat destruction.
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A patient with a mitochondrial disease is found to have a mutation in Gene X. A homologous gene in a Drosophila
(fruit fly), did not cause a similar deficit. What does this suggest?
a. Gene X is highly conserved between humans and Drosophila. b. Gene X is not conserved between humans and Drosophila. c. Gene X is encoded in nuclear DNA. d. Gene X is encoded in mitochondrial DNA. e. Gene X is a redundant protein in Drosophila.
The type strain is the most representative strain of a particular species.
Answer the following statement true (T) or false (F)
Terrestrial plants obtain carbon dioxide, required for photosynthesis, from the:a
soil. b. roots. c. atmosphere. d. water. e. sun.
Assume that the gene trpA in an auxotrophic strain of E. coli is located at 27 minutes, whereas the gene pyrE is located at 81 minutes
Present an experimental scheme that would allow you to convert one of the auxotrophic strains to a prototrophic strain. A) F+ (auxotroph) × F? (wild type) B) F+ (wild type) × F? (auxotroph) C) Hfr (auxotroph) × F? (auxotroph) D) Hfr (wild type) × F? (auxotroph) E) Hfr (auxotroph) × F? (wild type)