A DNA fragment contains 180 nucleotides in total, divided equally between its two strands. The complete sequence of bases on one strand codes for part of a protein. Every three bases on this strand code for one amino acid.
How many amino acids are coded for, and how many sugar groups are present in the whole fragment?
60 amino acids and 90 sugar groups.
30 amino acids and 90 sugar groups.
60 amino acids and 180 sugar groups.
30 amino acids and 180 sugar groups.
76 exam-style questions on AQA GCSE Biology 6.1 Reproduction, covering 6.1.1 Sexual and asexual reproduction, 6.1.2 Meiosis, 6.1.3 Advantages and disadvantages of sexual and asexual reproduction, 6.1.4 DNA and the genome, 6.1.5 DNA structure, 6.1.6 Genetic inheritance, 6.1.7 Inherited disorders, and 6.1.8 Sex determination. Each one has a worked solution and a mark scheme showing where the marks go.