1.

A homozygous pea plant with round seed coat and yellow cotyledons is crossed with another homozygous, pea plant having wrinkled seed coat and green cotyledons.(i) Give the types .of gametes produced by plants of F-generation. (ii) Give the dihybrid phenotypic ratio with the corresponding phenotypes. (iii) State Mendel’s principle involved in this cross.

Answer»

(i) Types of gametes = RY Ry rY ry 

(ii) Dihybrid phenotypic ratio =9 : 3 : 3 : 1 

(iii) Law of independent assortment : It states that two different characters or genes assort independently and enter into gametes without influencing each other.



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