There are a lot of people who are interested to know more about how genes can work. Some would like to know how they have inherited certain traits from their parents. Doing this is possible with the use of the breeding crosses that are available.
Monohybrid and dihybrid crosses are both known to be methods to discover certain traits but the difference is the number of traits that will be checked. Monohybrid cross can be used to check the traits of the offspring when it is compared to parents with one different trait.
A dihybrid cross will be used when there are two traits that are different. Some also use these breeding crosses in animals so they can come up with some of the best traits available.
Tara Pele, Technical Blogger, MCA from New York, New York
Answered Oct 03, 2019
Monohybrid cross-refers to the cross between parents and first-generation offspring. They usually differ in just one trait. Monohybrid cross is often used to determine the dominance of a certain gene. Therefore, it is used to study the inheritance pattern of a single pair of alleles. Monohybrid cross produces a phenotypic ratio of 3:1 and a genotypic ratio of 1:2:1 in the F2 generation. Dihybrid cross-refers to the cross between parents and their first-generation offspring.
They differ in two traits. Dihybrid genes are helpful in the study of an assortment of genes in offspring. Dihybrid cross produces a phenotypic dihybrid ratio of 9:3:3:1 in the F2 generation and a genotypic ratio of 1:2:1:2:4:2:1:2:1.