See above diagram, a represents

Options
water

glucose

oxygen

CO2

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.

When proteins are being produced by a cell, scientist say that the genes are question 2 options: activated turned off replicated deactivated

In which state was more than 100 billion tons of coal mined in 2005?