Question: Which of the following is the first law of inheritance?
A Law of Independent Assortment
B Law of Dominance
C Law of Segregation
D Law of Multiple Alleles
Answer: Law of Segregation
| Aspect | Gregor Mendel first law of inheritance | Gregor Mendel second law of inheritance |
| Known as | · Law of Segregation | · Law of Independent Assortment |
| Year of Discovery | · 1865 | · 1865 |
| Main Principle | · Alleles segregate or separate during gamete formation.
· Each gamete carries only one allele for each trait. |
· Alleles for different traits segregate independently during gamete formation. |
| Mendelian Ratios | · 3:1 phenotypic ratio
· 1:2:1 genotypic ratio. |
· 9:3:3:1 |
| Example | · Pea plant color | · pea plant color
· Seed shape |
| Genetic Variation | · Contributes to genetic diversity within a single trait. | · Contributes to increased genetic diversity by considering the inheritance of multiple traits. |
| Mathematical Models | · Utilized in Punnett squares for monohybrid crosses. | · Utilized in Punnett squares for dihybrid crosses. |