Question

Mendel studied discrete, qualitative traits in peas. This organism helped him induce the rules of inheritance. His work dealt with simple dominant/recessive relationships between alleles. However, expression of many traits are not governed by a single gene, rather can involve multiple genes as well as additive effects. This kind of inheritance pattern is known as quantitative (See Cogbooks -> Genetic analysis of populations for more information). Edward M East (1916) studied a continuously varying phenotype characteristic in Nicotiana longiflora. He took pure-breeding lines of N. longiflora growing long corollas and crossed them with pure-breeding lines growing short corollas. After crossing these lines, F1 offspring had an intermediate length for corolla and had same variation level as in parents. But found a very different result for F2 and F3 than expected. Discuss the reasons for this result and if it agrees/disagrees with Mendel’s law. Using obtained knowledge so far, what ki

Answer 1

Answer:The result helped him induce the rules of inheritance and it did disagree with his laws.

Explanation: He understood that the single genes could possess multiple traits and he discovered the rules of inheritance.