Principles of I...

A dihybrid ratio of 1 : 4 : 6 : 4 : 1 is obtained instead of 9 : 3 : 3 : 1. This is an example of 

A polygenic inherited trait is controlled by three pairs of genes. Two individuals which are heterozygous for three alleles, are crossed with each other. What will be the phenotypic ratio of offspring?

Who amongst of the following are famous for chromosome heredity?

If mutation occurs in sex chromosomes, it is called as

Polygenic inheritance was first noted by

In Melandrium, the sex determination type is:

In a plant, three dominant independently assorting genes A, B and C are essential for production of purple pigment. If any of the genes or all three genes are present in recessive condition then flower is colourless.
Raw material $$\overset { A }{ \rightarrow} X \overset { B }{ \rightarrow} Y \overset { C }{ \rightarrow} Z$$ pigment
A purple plant with genotype AABBCC cossed with a clourless plant with genotype aabbcc gives purple $$F_1$$ hybrid. On selfing of $$F_1$$,  what will be the proportion of coloured offspring in $$F_2$$?

Eye colour in fruitfly is a sex linked trait and the cross of white eyed female with red eyed male gives red eyed females and white eyed males. Rarely this cross may give all white eyed females and red eyed males. This was found to be due to non-disjunction of