Question

homework - mechanisms of speciation
the plant arabidopsis thaliana has a gene which has been found to show an unusually high rate of mutation. which conclusion is best supported by this observation?
the gene codes for flower color in the plant.
the gene is controlled by environment and not heredity.
traits associated with this gene are beneficial to the species.
traits associated with this gene may vary greatly in the species.

Explanation:

• Option 1: There is no information given to suggest a link between the high - mutation gene and flower color.
• Option 2: Genes are hereditary units. Environmental factors can influence gene expression, but genes themselves are inherited.
• Option 3: A high mutation rate does not necessarily mean the traits are beneficial. Mutations can be neutral, harmful, or beneficial.
• Option 4: A high mutation rate in a gene means that there will be more genetic variation for the traits associated with that gene. Genetic variation is the raw material for evolution and can lead to a wide range of phenotypic variation in a species.

Answer:

Traits associated with this gene may vary greatly in the species.