In dna, only the_ varies from one nucleotide to another. base phosphate sugar amino acid

What is the starting point in replication called

We all have different forms of genes from our parent(s).what are these different forms called? a.alleles b.characters c.dna d.resources

What are some of the immune functions of the lymphatic system? a. cleaning red blood cells from the blood and creating lymph fluids b.transporting lymph to the tissues and creating lymph fluids c.removing infectious agents and making white blood cells d.making red blood cells and removing infectious agents