Identify which one of the following is a test cross.
(i) `Tt xx Tt` (ii) `TT xx tt` (iii) `Tt xx tt`

Tt xx tt is

Tt xx tt is

Tt xx tt is

Tt xx tt cross is called:

In an organism, tall phenotype is dominant over recessive dward phenotype, and the alleles are designated as T and t, respectively. Upon crossing two different individuals, total 250 offsprings were obtained, out of which 124 displayed tall phenotype and rest were dwarf. Thus, the genotype of the parents were (a) TT × TT (b) TT × tt (c) Tt × Tt (d) Tt × tt

What do the following symbols used in the topic on heredity represent ? (a) TT (b) tt (c) XX (d) XY

The probability of all offspring for the cross Tt xx tt having T in the genotype will be.

Write do.wn the results of the given cross- Tt & Tt , TT & Tt, Tt & tt. Analyze the genotype of the parents of a colour blind friend.