Answer :

In a dihybrid cross, if you get 9:3:3:1 ratio it denotes that the alleles of two genes are segregating independently. This ratio is obtained when both the parents are heterozygous for both the genes. According to Mendel’s law of Independent Assortment ‘when two pairs of traits are combined in a hybrid segregation of one pair of characters is independent of the other pair of characters.’


The ratio 9:3:3:1 represent all the possible four phenotypes, which in turn proves that during gamete formation, allels of the two different genes are separated independent of each other. And thus each phenotype results in a unique genotype.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

Mendel’s Law of iBiology - Exemplar

Discuss in detailBiology - Exemplar

How was it concluBiology - Exemplar

How do genes and Biology - Exemplar

A, B, D are threeBiology - Exemplar