can someone explain the mRNA code to me so i can have a better understanding on how to categorize the code correctly

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

What happens when the cell copies its chromosomes

Select the correct answer from each drop-down menu. in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. the amount of calcium is variable. the risk of bone fractures .