Practicing Success
To prove theory of mutation, Hugo de Vries used _________ plant. |
Snap dragon or Antirrhinum Evening primrose Dog flower Pisum Sativum |
Evening primrose |
The correct answer is Option (2)-Evening primrose Hugo de Vries, a Dutch botanist proposed mutation theory to explain the mechanism of evolution. His theory was published in 1901 in his book "Die Mutation Theorie". According to him, mutations are sudden and heritable changes that are subjected to natural selection. The frequency of a mutated gene in the population is expected to increase if the gene is selected by nature. Hugo De Vries conducted his experiments on the plant Oenothera lamarckiana, the common name of this plant is “Evening Primrose”. When Oenothera lamarckiana was self-pollinated and seeds were collected. Its seeds were allowed to grow, the majority of F1-plants were similar to the parents, but a few plants were different from the parent plant. |