Describe the Genetic Origins of Biological Variation
Mutations the changes in the sequences of genes in DNA are one source of genetic variation. Genetics is a branch of biology concerned with the study of genes genetic variation and heredity in organisms. Genetic Variation As A Cause Of Evolution Online Biology Notes Finally genetic variation can be a result of sexual reproduction which leads to the creation of new combinations of genes. . Terms in this set 13 Law of segregation Mendels first law one unit or allele for each tray is inherited from each parent to give a total of two alleles for each trait. Origins of Genetic Variation. In contrast the genetic variations that underlie common multifactorial diseases generally are of older origin and have a smaller more gradual effect on homeostasis. 1 the origin of new self-incompatibility alleles in the flowering plants. Natural selection is the result of the interactions between genetic variations in a population and the envir...