Plant Genetics

• What is a phenotype in biology?

  Observable physical traits
• Genotypes are the physical traits that can be observed in an organism.

  False
• What is a genotype in biology?

  Genetic makeup for traits
• What does recessiveness mean in genetics?

  No effect with dominance
• Which allele is dominant for green leaves?

  YGR
• Which allele is recessive for yellow leaves?

  ygr
• Steps to understand phenotypes and genotypes

  1️⃣ Define phenotypes and genotypes

  2️⃣ Understand dominance and recessiveness

  3️⃣ Identify P1 and F1 phenotypes

  4️⃣ Determine genotypes for P1 and F1

  5️⃣ Predict possible genotypes for P2
• What happens when a dominant allele masks a recessive allele?

  Dominant trait appears
• What does the term "allele" refer to in genetics?

  Variant of a gene
• What are the P1 phenotypes in the example walkthrough?

  Purple/Green stem, Green/Yellow leaf