Why is it necessary for children to get more than one vaccination for a pathogen?

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.

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into

Cells are adapted to preform specific functions. which of the following terms refers to this capability?