In your own words, describe the base-pairing rules in any dna molecule.

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.

Drag each tile to the correct box. arrange the layers and faults from oldest to youngest.

If a checkpoint detects damaged dna, the checkpoint may