Triazines are a group of chemicals used to kill weeds in the field, such as pigweed and kochia. However, in late 1970s and early 1980s, resistant plants were found that are resistant to triazine applications. Which of the following statements is correct? -The appearance of triazine resistance is the result of mutation. -The spread of triazine resistance in the field is the result of natural selection. -Even if farmers have not used triazines, there would still be individuals with triazine resistance in the field, albeit at a much lower frequency. -All the statements are correct.
Evolutionary Genetics
Evolution is known as continuous changes that occur to adjust organisms in their changing environment over many generations. Various theories have been proposed to illustrate the origin of life and organic evolution. The most accepted one is the theory of natural selection by Charles Darwin. According to his postulate, organisms undergo a struggle for existence due to overproduction. To survive in nature, they acquire variations. The inheritable variations are selected by nature, and it leads to the survival of the fittest.
Phenotype Frequency
The majority of populations have a certain degree of variation in their genetic pools. Scientists can predict the genetic variation happening over time by measuring the amount of genetic variation in a population and these predictions assist them in gaining important insights into the processes that allow organisms to adapt to the environment or to develop into new species over generations. This process is referred to as the process of evolution.
Hardy Weinberg Equilibrium
The frequencies of allele and genotype were maintained constant from one generation to another due to the absence of other evolutionary forces. It is otherwise called the Hardy Weinberg principle the field of population genetics.
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-The appearance of triazine resistance is the result of mutation.
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-The spread of triazine resistance in the field is the result of natural selection.
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-Even if farmers have not used triazines, there would still be individuals with triazine resistance in the field, albeit at a much lower frequency.
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-All the statements are correct.
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