Human ABO blood groups are controlled by the gene I, which has three alleles `I^A`, `I^B` and i .Each person Passeses any two of the three I gene alleles. Make table showing the different combinations of these three alleles that are possible In human.

Study the following cross and answer the questions. [Hint: ABO blood group in man Is controlled by three alleles I^A ,I^B and i] Write the genotypes of Father, mother and Son.

Study the following cross and answer the questions. [Hint: ABO blood group in man Is controlled by three alleles I^A ,I^B and i] The type of dominance of human blood group inheritance is……………...

Two persons A and B throw a die alternatively till one of them gets a three and wins the game.If A begins,find (i) the probability of winning of A.

Given three identical boxes I, II and III, each containing two cọins. In box 1 , both coins are gold coins, in box II, both are silver coins and in the box III, there is one gold and one silver coin. A person chooses a box at random and takes out a coin. If the coin is of gold, what is the probability that the other coin in the box is also of gold?