BIO341H5 Lecture 20: Lecture 20
Document Summary
Variability a population can sustain, new variabilities entering a populations and variability being lost. Selection, acts on genetic variability, favour and not favoured, Recombination can homogenise populations, does alter genotypes. Drift, frequencies will change, one of the two alleles may be lost all together. Mutant allele is not the frequency of that allele, frequency site changes per cycle of replication. Members all participate in the same lottery of reproduction a unit going forwards in time. Clonal population, each produced 2 gametes some will combine and form an individual, Induced mutation - environment induces a particular mutation or not, same rate of mutant alleles. Spontaneous mutation, no even rates between populations, huge fluctuations contribution of generation; 1 not all contributed other contributed more than 2. May reach fixation, each pea is another population when it reaches 1. 0 or 0 it reaches absorption and can"t change. Variability will be lost, going forward; new variability comes in through mutation and.
