In antirrhinum two plants with pink flowers were hybridized. The F₁ plants produced red, pink and white flowers in the proportion of 1 red, 2 pink and 1 white. What could be the genotype of the two plants used for hybridization ? Red flower colour is determined by RR, and White by rr genes -

A cross in which an organism showing a dominant phenotype in crossed with the recessive parent in order to know its genotype is called -

Study the pedigree chart of a certain family given below and select the correct conculusion which can be drawn for the character –

ABO blood groups in humans are controlled by the gene I. It has three alleles – I^A, I^B and i. Since there are three different alleles, six different genotypes are possible. How many phenotypes can occur –