I need help please um just look at the pictures so yea​

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

What are two examples of conduction that we use everyday

What was the purpose of mendel's experiments with dihybrid crosses? a. to determine if dna was a transforming factor b. to determine if traits could be recessive c. to determine if traits affected each other d. to determine if traits had more than one allele