The Punnett square given below shows the pattern of inheritance in a dihybrid cross, where Round (R) is dominant over Wrinkled (r) seeds and Yellow (Y) is dominant over Green (y) seeds. Identify the odd one:

Question

The Punnett square given below shows the pattern of inheritance in a dihybrid cross, where Round (R) is dominant over Wrinkled (r) seeds and Yellow (Y) is dominant over Green (y) seeds. Identify the odd one: <img class="img-fluid question-image" alt="Question" src="https://cdn.tardigrade.in/q/nta/b-46qycu1rixwrfztc.jpg" /> (A) E (B) D (C) F (D) M

Tardigrade Admin · Accepted Answer

Punnett square is a graphical representation of determining genotype and phenotype in an individual inherited from the parents.
Here is a Punett square for

F_{2}

generation showing dihybrid cross in dominant Round and Yellow

(RR YY)

pea plant with recessive Wrinkled and Green

(rryy)

pea plant. The ratio of the

F_{2}

progeny is

9 : 3 : 3 : 1

in dihybrid cross producing total

16

plants.
Parental Genotype in

F_{1}

generation-

R r Y y \times R r Y y

Here, column

F

i.e.

RR yy

is odd because it has both one dominant and one recessive character in homozygous form.
Solution

Q. The Punnett square given below shows the pattern of inheritance in a dihybrid cross, where Round (R) is dominant over Wrinkled (r) seeds and Yellow (Y) is dominant over Green (y) seeds. Identify the odd one:

E

D

F

M