Principles of Inheritance and Variation Question 3
3. The production of gametes by the parents, the formation of zygotes, the F1 and F2 plants, can be understood using
[2019, Odisha]
(a) Wenn diagram
(b) Pie diagram
(c) A pyramid diagram
(d) Punnet square
Show Answer
Answer : d
Hints & Solution
(d) Punnettsquare is a graphical representation of the possible genotypes of an offspring arising from a particular cross or breeding event. With the help of Punnett square the production of gametes, the formation of zygotes and the F1 and F2 plants can be understood. Punnett square is named after Reginald $C$. Punnett, who devised the approach. These tables can be used to examine the genotypical outcome probabilities of the offspring of a single trait (allele), or when crossing multiple traits from the parents. The Punnett square is a visual representation of Mendelian inheritance. It is important to understand the terms “heterozygous”, “homozygous”, “double heterozygote” (or homozygote), “dominant allele” and “recessive allele” when using the Punnett square method. For multiple traits, using the “forked-line method” is typically much easier than the Punnett square.
