Are tropic movements only shown by roots??

Which statement best describes the relationship between an allele and a gene? question 1 options: an allele is a variation of a gene that can be expressed as a phenotype. an allele is the part of a gene that attaches to messenger rna molecules. an allele is a segment of a dna molecule that controls replication of a gene.

The buildup of sediments where a river empties into a slow-moving or nonmoving body of water is known as a/an

What drives an advertising campaign?