Parental (P) generation - p. 161

          F₁ generation - p. 161

          F₂ generation - p. 161

Allele - p. 164

Homozygous - p. 164

          True breeding - p. 163 + 164

Heterozygous - p. 164

Principle of dominance - p. 162 + 164

Dominant - p. 162 + 164

Recessive - p. 162 + 164

Genotype - p. 164

Phenotype - p. 164

Punnett square - p. 165

          Gametes - p. 148 + 149 + 165

Monohybrid cross - p. 165

Test cross - p. 166

Dihybrid cross - p. 167

Multiple alleles - p. 173

          Codominant - p. 173

Erythroblastosis fetalis - p. 555

Polygenic inheritance - p. 170

Phenylketonuria   PKU - p. 180

          Phenylalanine (Amino acid) ------> Tyrosine (Amino acid)

Sickle cell anemia - SS     Ss     ss - p. 168 + 182 + 272 + 273

          Heterozygote advantage - Ss - p. 182 + 272 + 273

Cystic fibrosis - p. 86 + 170

Huntington's disease - p. 180 + 183

		 	  	 Genotype             	         Phenotype

Homozygous Dominant	Bent / Bent  (BB)			- Bent little fingers 
 ( True Breeder )  

Heterozygous		Bent / Straight  (Bb)	 	- Bent little fingers
         
Homozygous Recessive	Straight / Straight  (bb) 	- Straight little fingers
 ( True Breeder )

     Possible Genotype		 Phenotype

	AA, AO				Type A blood
	BB, BO				Type B blood
	AB (Codominant)		Type AB blood
	OO				Type O blood



   LIGHT	      		MEDIUM		   	      DARK

  aabbccdd  --------->  AaBbCcDd  ------------>  AABBCCDD

Mouse can be Black or Tan

Black is dominant



Their hair can be Straight or Curly

Straight is dominant



Cross 2 mice that are heterozygous for both traits - dihybrid cross



Genotypes of the Parents = ___________________________



Gametes of the Parents = ____________________ 	



How many are:



Black with straight hair _____________



Black with curly hair _______________



Tan with straight hair ______________



Tan with curly hair ________________