P1 - 2019 Flashcards
1
Q
give 3 ways the DNA in a chloroplast is different from the DNA in the nucleus
A
in chloroplasts:
DNA is shorter
has fewer genes
DNA circular not linear
2
Q
Some DNA nucleotides have the organic base thymine, but RNA nucleotides don’t have thymine, they have uracil.
give one other difference between the structure of DNA + RNA nucleotides
A
DNA has deoxyribose
RNA has ribose
3
Q
not all mutations in nucleotide sequence of a gene cause a change in the structure of a polypeptide
give 2 reasons why
A
triplets code for same amino acid
occurs in introns
