Question

Formation of maximum possible type of gametes by a heterozygous genotype is due to
1) Dependent behavior of pairs of alleles of genes
2) Independent behavior of pairs of alleles of genes
3) Complete dominance exerted by the two alleles of one gene
4) Incomplete dominance exerted by the two alleles of one year

Answer 1

option 2

Independent behavior of pairs of alleles of genes

because gametes segregate

Answer 2

Answer:

Option 2) Independent behaviour of pairs of alleles of genes

Explanation:

• The genotype refers to the genetic constitution of traits of an organism i.e. complete set of all the inheritable genes which can be segregated from one generation to the other. (Mendel's law of segregation)

• The formation of the gametes follows the Mendelian law of inheritance and the law of segregation.

• The maximum possible number of gametes can be calculated using a specific formula $2^{n}$, where n= no. of heterozygous alleles found in genotype

• The paired unit factors segregate randomly in such a way that each gamete receives one or another unit factor with equal probability. This ensures the purity of gametes. (Law of segregation)

• The law of independent assortment refers to the separation or segregation of one pair of unit factors that occur independently of the other pair or they will assort independently. The gamete must carry all possible combinations of the unit factors in equal frequency.  

Hence the formation of the maximum possible type of gametes by a heterozygous genotype is due to the independent behaviour of pairs of alleles of genes.