After studying the population for 15 generations the researcher noted that the birds now laid an average of eggs per clutch. Use the probability or forked line method to calculate the chance of any particular genotype arising from a genetic cross.
Genetic variation is advantageous to a population because it enables some individuals to adapt to the environment while maintaining the survival of the population.
Plant Reproduction Genetics 1. Such close inbreeding can have deleterious consequences. Genetic variation is a measure of the variation that exists in the genetic makeup of individuals within population. The allele that contains the dominant trait determines the phenotype of the offspring.
The calculation of any particular genotypic combination of more than one gene is, therefore, the probability of the desired genotype at the first locus multiplied by the probability of the desired genotype at the other loci.
Sources of variation - An Introduction to Genetic Analysis. Transcription 3. However, recombination by itself does not produce variation unless alleles are segregating already at different loci; otherwise there is nothing to recombine. Gene duplication, mutation, or other processes can produce new genes and alleles and increase genetic variation.
What is the most plausible explanation for why the male of most birds species have elaborate plumage and mating rituals?