Unit Size each
Demonstrates Mendelian genetics by looking at the R (Colour) alleles in a monohybrid F2 corn ear from a Purple(RR) with Yellow(rr) cross.
P RR x rr
F1 Heterozygous Purple Rr
F1 cross Rr x Rr
F2 phenotypes RR , Rr , rr
Phenotypes Purple, Yellow in a 3:1 ratio.
See also S5.5 Maize ear model, monohybrid cross, a mounted visual display of this cross.