1Referencing the provided DNA base sequence (ACCCCATTTCATCCA) and the tRNA anticodon table, determine the amino acid sequence coded by this segment of the gene. Assume the sequence is read from left to right and the first codon starts at the beginning of the sequence.
2A mutation changes the DNA base sequence from ACCCCATTTCATCCA to ACCCGATTTCATCCA. Suggest two possible effects this mutation could have on the protein produced.
3Explain the biological importance of the reduction of chromosome number during meiosis.
4In Figure 2, homologous chromosomes are shown undergoing crossing over. Define the term 'allele'.
5Considering the experiment with ivy leaves, explain the importance of selecting the ivy plant using a random number table.
6Why is standard deviation a more useful measure of variation within a population than the range, when comparing the leaf lengths of green and variegated ivy leaves?
7Explain how the ability of some bacteria to produce an enzyme that breaks down penicillin may arise.
8Explain how penicillin kills bacteria, considering its effect on cell wall production.
9A large body size in snow geese is an adaptation for breeding in colder conditions. Explain how.
10Describe how the percentage of white snow geese varies with distance north, based on the provided table.
