There is evolution.
Genotype frequencies in a population.
Dominant alleles become more common in each generation
That they change frequency from one generation to the next and can be easily calculated, with morphological traits visible and Mendelian expression seen, by this polynomial expansion.p2 + 2pq + q2 = 1-----------------------
alleles are variations of genes
The letters on the outside are the genotypes of two parents. Inside are the possible genotypes of possible offspring of the two
Genotype frequencies in a population.
The genotypes in which one or more alleles is dominant.
homologous
Dominant alleles become more common in each generation
A heterozygous genotype, is the genetic makeup of different alleles.
The parents can pass on only the alleles of their genotypes to their offspring. Therefore, the offspring genotypes and phenotypes are dependent solely upon the alleles inherited from the parents.
Traits governed by multiple alleles are controlled by three or more alleles, rather than two. An example in humans is the ABO blood group system. There are three alleles in the ABO blood group system, IA, IB, IO. These three alleles can produce six genotypes, AA, AO, BB, BO, AB, OO. These genotypes can produce four different phenotypes, A (genotypes AA or AO), B (genotypes BB or BO), AB, (genotype AB) and O (genotype OO).
Possible alleles in the gametes of the parents
That they change frequency from one generation to the next and can be easily calculated, with morphological traits visible and Mendelian expression seen, by this polynomial expansion.p2 + 2pq + q2 = 1-----------------------
Genotypes are not created by phenotypes, they are the alleles/genes of the organism. Genotypes (in combination with environment) produce phenotypes. It would be expected that the genotypes Bb and BB would produce the phenotype B.
The five Hardy-Weinberg principles for non-evolving populations are extremely large population size, no gene flow, no mutations, random mating, and no natural selection. An extremely large population size is necessary because the smaller the population, the greater the role chance fluctuations play in allele frequencies from generation to generation. It is important that there is no gene flow because that transfer of alleles between populations can alter allele frequencies. Similarly, mutations modify the gene pool by introducing/removing genes from chromosomes or by changing one allele into another. Random mating is important so that individuals do not preferentially choose certain genotypes in their mates. Also, there must be no natural selection because if individuals carrying different genotypes had different survival and reproductive success, then that would alter the allele frequencies.
The letters on the outside are the genotypes of two parents. Inside are the possible genotypes of possible offspring of the two