157 Mutations Key Ideas cra TGA codes tor stoE The oeieson a

157 Mutations Key Ideas cra TGA codes tor stoE The oeieson a recessive allele Aperaon Define the tem mutation How do mutasons increase vs raton? 2 iderofy the type of mutation that has occurred in the DNA sequences shown below. Normal DNA sequence: CCT GAT GCG AAG TTA TCA GTA CCA. ONA sequence 1: CCT GAT GCGTTA TCA GTA CCA DNA sequence 2 CCT GAT G AAG CCC TTA TCA GTA CCA ONA sequence 3 COT GAT GOG AAG TTATGA GTA CCA.

Solution

1. a. Mutation is the sudden alteration in the nucleotide sequence of the DNA leading to change in the genetic message carried by the gene.

b. Mutation causes changes in the nucleotide sequence. This leads to formation of new genes and alleles, causing genetic variation. Mutation in a population with high reproduction rate will show higher genetic variation.