Explain how abiotic factors contribute to the carbon cycle in a marine ecosystem?

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

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

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.