Difference Between Monohybrid And Dihybrid
Criteria |
Monohybrid |
Dihybrid |
Definition |
A cross between two individuals that differ in only one genetic trait. | A cross between two individuals that differ in two genetic traits. |
Gene pairs |
Involves one gene pair. | Involves two gene pairs. |
Alleles |
Only two alleles are involved. | Four alleles are involved. |
Genotypic ratio |
1:2:1 | 1:2:1:2:4:2:1:2:1 |
Phenotypic ratio |
3:1 | 9:3:3:1 |
Law |
The Law of segregation was formulated based on the monohybrid cross. | The law of independent assortment was formulated based on the dihybrid cross. |
Test cross ratio |
1:1 | 1:1:1:1 |
Example |
Cross between tall and short pea plants. | A cross between pea plants with round and yellow seeds and plants with wrinkled and green seeds. |
Difference Between Monohybrid And Dihybrid
Genetics is a branch of biology that studies how traits are passed down from generation to generation. In genetics, the words “monohybrid” and “dihybrid” describe the inheritance of traits in offspring. The terms monohybrid and dihybrid refer to the number of characteristics or traits being studied in a cross between two individuals.