Monohybrid Inhert

• What does “mono” mean in monohybrid inheritance?

  One
• What is inherited in monohybrid crosses?

  One gene
• Which allele is always shown if present?

  Dominant
• Which allele is only shown if two copies are present?

  Recessive
• What are the possible alleles for a person with brown eyes (B = brown, b = blue)?

  BB or Bb
• What are the alleles for someone with blue eyes (B = brown, b = blue)?

  bb
• In a Punnett square, what shows the parent alleles?

  The sides
• What does a Punnett square show?

  The chance of eye colour
• What is the chance of a child having brown eyes if both parents are Bb?

  75%
• What is the chance of a child having blue eyes if both parents are Bb?

  25%