Genetic Diagrams & Punnet Squares

• How would you describe the genotype 'AA'?

  Homozygous dominant 
• How would you describe the genotype 'Hh'?

  Heterozygous 
• Which genotype completes the empty section of the Punnett square?

  dd

  
• 50%

  Out of the 4 offspring, 2 are heterozygous, which means the probability is 2/4, which is 50%. 

  
• 3:1

  
• How would you describe the genotype 'dd'?

  Homozygous recessive