All of the organs in the organ system have which of these in common? a) they all have the same exact function. b) humans could not survive without them. c) each of the organs is made from individual cells. d) all of the organs make up the respiratory system.

Which process must a cell undergo top identical cells at the end of cell division

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.

What is the difference between how ionic and covalent bonds form