Which statement best describes a keystone species? a. it has little genetic variation. b. it has an extremely high population. c. it remains unaffected by all environmental changes. d. it has a strong influence on the ecosystem. e. it’s the first species to populate a new ecosystem.
Answers: 1
Biology, 21.06.2019 17:20
The trp operon in e.coli regulates genes that code for enzymes required for synthesis of the repressible operon. when tryptophan is not available amino acid tryptophan. the trp operon is a in the environment, the trp repressor protein activeinactiveregulated. therefore, rna polymerase can bind to the genes to begin transcription.
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Which statement best describes a keystone species? a. it has little genetic variation. b. it has an...
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