Parental (P) generation
F1 generation
F2 generation
Allele
Homozygous
True breeding
Heterozygous
Principle of dominance
Dominant
Recessive
Genotype
Phenotype
Punnett square
Gametes
Monohybrid cross
Test cross
Dihybrid cross
Multiple alleles
Codominant
Erythroblastosis fetalis
Polygenic inheritance
Phenylketonuria PKU
Phenylalanine (Amino acid) ------> Tyrosine (Amino acid)
Sickle cell anemia - SS Ss ss
Heterozygote advantage - Ss
Cystic fibrosis
Huntington's disease
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 ________________