How many types of phenotypes and genotypes are seen in $F_2$ generation of Mendelian monohybrid cross?  

Monohybrid cross: a cross involving 2 parents with one contrasting trait. When Mendel crossed a 

Tall plant with a dwarf plant ,F1 is all tall plants .When F1 hybrid is allowed for self pollinatio, F2 generation is obtained whose genotype is a 

Types of phenotypes – 2,  and Types of genotypes – 3