This document summarizes five genetic crosses: legs showing simple dominance, hair showing simple dominance, eye color showing co-dominance, skin color showing incomplete dominance, and teeth showing sex-linked inheritance. Each cross lists the parental genotypes and phenotypes, offspring genotypes, and phenotypic ratios.

1. Monohybrid Crosses

2. Legs
Simple Dominance
L : 2 Legs
l : 4 Legs
Parents
LL X LL
2 Legs x 2 Legs
Genotype
4:0:0
Phenotype
4:0
L L
L LL LL
L LL LL

3. Hair
Simple Dominance
H : Hair
h : No hair
Parents
Hh X Hh
Hair x Hair
Genotype
1:2:1
Phenotype
3:1
H h
H HH Hh
h Hh hh

4. Eye Color
Co - Dominance
C : Green
c : Blue
Cc : Green/Blue
Parents
CC X Cc
Green x Green/Blue
Genotype
2:2:0
Phenotype
2:0:2
C C
C CC CC
c Cc Cc

5. Skin Color
Incomplete Dominance
S : Red
s : White
Ss : Pink
Parents
Ss X Ss
Pink X Pink
Genotype
1:2:1
Phenotype
3:1
S s
S SS Ss
s Ss ss

6. Teeth
Sex-Linked Inheritance
XT : Teeth
Xt : No Teeth
Parents
(XT Xt) X (XT Y)
Teeth(Hetero.) x Teeth
Genotype
2:1:1
Phenotype
Male - 1:1 ; Female - 2:0
XT Xt
XT XTXT XTXt
Y XTY XtY