Question | Answer |
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. |
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