True or false: The main role of restriction endonucleases is to protect against foreign DNA in the biotechnology lab.

What are the types of mutations, and how does each alter the encoded protein? college level answer

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

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.