Use the drop-down menus to complete each sentence.
А
is an organism that eats other organisms to gain energy; it is also called
A
is an organism that makes its own food; it is also called
is an organism that breaks down waste and dead organisms.

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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.

What amino acid is coded for by this sequence after the mutation

How are fossils used to date organisms?