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SLS Bio11 Genetics

SLS Bio11 Genetics (JE)

Allele Different form of a gene, they occur during the same locus on homologous chromosomes
Autosome Any type of chromosomes except sex chromosomes
Codominance A pattern of of inheritance when both alleles of a gene are equally expressed
Dihybrid One individual that is heterozygous for two traits it shows the phenotype by the dominant alleles but carries the recessive alleles
Dominant allele An allele that gets its phenotypic effect in the heterozygote, it receives the expression of he recessive allele
Genotype Genes of an individual of a particular train or trait, designated often by letters sush as BB or Aa
Heterozygotes Having two different alleles for a given trait
Homozygous Having identical alleles for a given trail, free breeding
Monohybrid Individual for one trait that is heterozygous, the phenotype of the dominant allele but but carries the recessive allele
Multiple allele Inheritance pattern where there are more than two alleles for a particular trait, every individual only has two possible alleles.
Phenotype Different appearance of an organism caused by genotype and environmental influences
Punnet square Grid like device that is used to calculate the results of simple genetic crosses
Recessive allele Hereditary factor that show itself as a phenotype only when it is the genotype
Sex chromosomes Chromosomes that determine the sex of a human being
Sex linked traits Allele that happens on the sex chromosomes but can sometimes control a trait ypthat has nothing to do with sexual characteristics
Test cross The cross between an individual with dominant phenotype and an individual that has a recessive phenotype. The phenotypic ratio after indicates if the dominant phenotype is homozygous or heterozygous.
Created by: jerskine