If the ratio of each phenotype of the seeds of pea plants in the F₂ generation is 9 : 3 : 3 : 1, it is known as :

A zygote which has inherited an X chromosome from the father will develop into :

Which of the following statement is incorrect?

In humans, if gene B gives brown eyes and gene b gives blue eyes. What will be the color of eyes of the persons having the following combination of genes?

(a) Bb (b) bb (c) BB

Pure-bred pea plants A are crossed with pure-bred pea plants B. It is found that the plants which look like A do not appear in F₁ generation but re-emerge in F₂ generation. Which of the plants A and B are : (i) tall, and (ii) dwarf? Give reason for your answer.