Monohybrid Inheritance

• Monohybrid inheritance refers to the inheritance pattern of one characteristic from two parents to any potential offspring.
• Co-dominance occurs when a single gene has more than one dominant allele.

  
  

  An individual who is heterozygous for two co-dominant alleles will express the phenotypes associated with both alleles.

  
  

  E.g If a pure breeding red flower (RR) is crossed with a pure breeding white flower (WW), the offspring will have the genotype RW and will have both red and white petals.
• Pure Breeding - it means they carry identical alleles for a particular trait, and so did their parents. (eg. homozygous dominant or homozygous recessive)
• Test Cross

  • used to determine if an organism is purebred or not
  • it involves mating the organism (dominant phenotype and unknown genotype) with an individual that is homozygous recessive for the trait.