Mendel conducted his hybridization experiment with:
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Mendel's Hybridization Experiment
Gregor Mendel, known as the father of genetics, conducted his pioneering hybridization experiments using the garden pea (scientific name: Pisum sativum).
Why Garden Pea?
Mendel chose garden peas for several key reasons:
- Distinct contrasting traits: Pea plants have easily observable characteristics like seed shape (round vs wrinkled), seed color (yellow vs green), flower color (purple vs white), etc.
- Short life cycle: They grow and reproduce quickly, allowing for multiple generations of study in a single year.
- Easy to cross-pollinate: Mendel could manually control pollination to create specific hybrids.
- True-breeding nature: Pea plants self-pollinate in nature, producing offspring with identical traits, which allowed Mendel to establish pure-breeding lines.
Key Findings from the Experiment:
Mendel's work with garden peas led to the formulation of the fundamental principles of inheritance:
- Law of Segregation: During gamete formation, the two alleles for a trait separate (segregate) so that each gamete carries only one allele.
- Law of Independent Assortment: Genes for different traits assort independently of one another during gamete formation.
These discoveries were the foundation of modern genetics, and they were made possible specifically by using the garden pea.
Final Answer:
Mendel conducted his hybridization experiment with the garden pea (Pisum sativum).
Related Topics & Formulae
Key Genetic Concepts:
- Genotype: The genetic makeup of an organism (e.g., TT, Tt, tt).
- Phenotype: The observable physical characteristic (e.g., tall, short).
- Allele: Different forms of a gene (e.g., T for tall, t for short).
- Homozygous: Having two identical alleles for a trait (TT or tt).
- Heterozygous: Having two different alleles for a trait (Tt).
Punnett Square (Conceptual Formula):
A Punnett Square is a diagram used to predict the genotypes of a cross between two individuals. For a monohybrid cross (one trait) between two heterozygous parents (Tt x Tt):
This results in a genotypic ratio of 1 (TT) : 2 (Tt) : 1 (tt) and a phenotypic ratio of 3 (Dominant) : 1 (Recessive).
Probability in Genetics:
The probability of an offspring inheriting a specific genotype can be calculated. For example, the probability of an offspring being homozygous recessive (tt) from two heterozygous parents (Tt x Tt) is: