Depending on the organism the number of in a cell may change

What is the role of dna ligase in the elongation of the lagging strand during dna replication?

Which sets of mrna codons could genetically come for a protein with the following amino acid composition

Which claim correctly describes how genes can produce a phenotype? one gene is responsible for all traits. each trait is determined by a single gene. one gene can be responsible for many traits. each gene is responsible for exactly one trait.