True breeding strains

• What are true-breeding strains?

  Organisms that consistently produce offspring identical to themselves when self-fertilised.
• Why are true-breeding strains homozygous?

  Because they have identical alleles for all traits.
• Why was using true-breeding strains crucial for Mendel's success in his genetic experiments?

  Because their homozygous genotypes lead to predictable results and consistent inheritance patterns.
• How does a true-breeding yellow-seeded pea plant behave?

  It always produces yellow-seeded offspring.
• What is the significance of true-breeding strains in genetic research?

  They allow predictable inheritance patterns.
• How do true-breeding strains ensure consistent inheritance?

  They have identical alleles, leading to uniform offspring.
• How do true-breeding strains differ from hybrid offspring?

  True-breeding strains are homozygous, while hybrids are heterozygous.
• What will be the genotype and phenotype of the offspring when crossing true-breeding tall (AA) with dwarf (aa) peas?

  All offspring will be tall (Aa) hybrids.
• What are the benefits of using true-breeding strains in genetic research?

  They provide predictable inheritance patterns and control genetic factors.
• What is the genotype of hybrid offspring from true-breeding strains?

  Hybrid offspring are heterozygous (e.g., Aa).