Which of these instruments can be used to predict heavy rainfall?

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.

According to cell theory; which structures carry out the basic function of living things? a. atoms b. organs c. cells b. nuclei

Where does the esophagus lead to in a frog?