Social studies and art are different from science because these subjects do not rely on

Why do you sandy beaches form at many sea shores

Organisms within a population must compete for resources to survive

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.