Monohybrid Cross
1. What is a Monohybrid cross and a Dihybrid cross?
Answer:
A monohybrid cross studies the inheritance of a single gene or trait, while a dihybrid cross examines the inheritance of two different genes or traits simultaneously.
2. What is Law of Mendel in Monohybrid cross?
Answer:
Mendel’s Law of Dominance states that in a heterozygous individual (having one dominant and one recessive allele), the dominant allele will be expressed, and the recessive allele remains masked.
3. What is the Difference between Monohybrid and Dihybrid cross Phenotypic Ratio?
Answer:
The phenotypic ratio in a monohybrid cross is 3:1 (one gene), while in a dihybrid cross, it’s 9:3:3:1 (two genes).
4. What is meant by Dihybrid cross?
Answer:
A dihybrid cross is a genetic cross that examines the inheritance of two different genes or traits simultaneously by crossing individuals with differing alleles for both genes.
5. What are the three Laws of Mendel?
Answer:
Mendel proposed 3 laws after experiments on pea plants with a variety of traits:
- Law of Dominance
- Law of Segregation
- Law of Independent assortment
Monohybrid Cross – Inheritance of One Gene
Monohybrid cross occurs when two organisms with contrasting variations at a particular genetic locus are crossed. The traits being studied are influenced by multiple variations at a single gene location. The resulting offspring, known as the F1 generation, will all be heterozygous and express the dominant trait, masking the recessive trait. The monohybrid cross demonstrates Mendel’s law of dominance.
Table of Content
- Monohybrid Definition
- What is Monohybrid Cross?
- How to carry out a Monohybrid cross?
- Example of Monohybrid Cross
- Huntington’s Disease
- FAQs on Monohybrid Cross