Whal are pigment made up of

What are chlorofluorocarbons made of

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.

Look at the photo of the leaf. which term best describes this leaf?