Is the attraction between the positive end of one water molecule and the negative end of another water molecule

One group of reptiles, characterized by the fossil ark metal x

What are two ways in which waves erode the land?

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.