(i) Differences between dominance and recessive are:
1.When an allele expresses itself in the presence of its recessive allele, it is called dominant trait.
2.Dominant allele forms a complete functional enzyme due to which complete polypeptide is formed to express.
1.It can only express in the absence of its dominant allele and remain masked in its presence.
2. Recessive allele forms incomplete polypeptide enzyme due to which non-functional polypetide is formed and foils to express completely.
(ii) Differences between homozygous and heterozygous are:
1.Homozygous is a condition when both alleles of a gene are similar.
2.The genotype is expressed as TT or tt.
3.They are true breeding leading to pure, lines.
4. The gametes produced by them are similar in genotype.
1.It is a condition when both alleles of a gene are dissimilar.
2.The genotype expressed as Tt. .
3.They are not true breeding.
4.The gametes produced by them are of two types, one with dominant,allele and other with recessive allele.
(iii) Differences between monohybrid and dihybrid are:
1.It is an individual that is heterozygous for a single trait
2.It is the hybrid produced by the cross between parents having contrast in a single character.
1.It is an individual that is heterozygous for two traits.
2.It is the hybrid produced by the cross between parents having contrast of two characters.