phenotypes genotypes heterozygous homozygous

Tall Tt x Tt 25 % TT 25 % Tt 25 % tT 25 % tt 75 % tall 25 % short

Round (Rr) x Round (Rr) Heterozygous Cross R – round r - wrinkled

 For any Given Trait, an Individual has 2 Alleles (pair of genes)  An Individual Can Only Pass on 1 Allele (one of the pair) to the Next Generation  Only 1 Allele of the Pair is Expressed  When Heterozygous, the Expressed Allele is Dominant, the “Hidden” Allele is Recessive  Alleles Segregate During Gamete Formation  A Recessive Allele can only be Expressed when Homozygous

Round & Yellow Rr Yy Round & Yellow Rr Yy X The Inheritance of one trait does not effect the inheritance of another trait  9 round & yellow  3 wrinkled & yellow  3 round & green  1 wrinkled & green 75 % round 25 % wrinkled 75% yellow 25% green

Tall StemRound Seed Yellow Seed Purple Flower Inflated Pod Green Pod Axial Flowers Short Stem Wrinkled Seed Green Seed White Flower Pinched Pod Yellow Pod Terminal Flowers