The Study of Genetics
Compare and Contrast
*Dominant-the allele that is more powerful. *Recessive - the allele that is masked or overpowered. *Heterozygous- 2 alleles of the trait that differ from each other. *Homozygous- 2 alleles of the trait are the same. *Genotype- gene combinations of an organism.*Phenotype- the way an organism looks or behaves.
Multiple alleles is the presence of more that two alleles for a genetic trait. It is used to determine an inheritance pattern.
Sex Linked Traits
Characteristics: determined by genes on sex chromosomes. *Example: hemophilia.
Describe incomplete dominance and codominance and provide an example for both.
*Incomplete dominance - phenotype of heterozygous individuals is intermediate between those of the 2 homozygotes. * Codominance- phenotypes of both homozygotes produced in heterozygous individuals. Both alleles are expressed equally.