In molecules of rna uracil takes the place of the dna base

In molecules of RNA, uracil takes the place of the DNA base thymine . 4. Build: Continue building the strand of mRNA until you have used all of the RNA nucleotides. ... Every group of three bases of mRNA is called a codon .

metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). the change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. i hoped i !