What kind of viruses are there

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

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 is the most appropriate method of gaining weight (muscle mass)