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In which situations is the principle of cross-cutting relationship useful in determining relative age?
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Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.
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Biology, 22.06.2019 15:00
Which of the following organisms are capable of self-fertilization? a.plants b.tigers c.humans
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what would happen to the amount of tryptophan being produced in an E. coli cell when the repressor i...
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