Answer:
Blastogenic variation refers to changes that occur in an organism due to external factors, such as the environment, and these changes can be passed on to the next generation. Therefore, the correct statement about blastogenic variation is that it passes from one generation to the next.
Unlike blastogenic variation, genetic variation is responsible for the evolution of new characteristics. Genetic variation occurs through changes in the genetic material of an organism, such as mutations or recombination of genes. These genetic changes can lead to the development of new traits over time.
Examples of blastogenic variation mentioned in the question, like the muscular body of an athlete and the intelligence of a person, are not blastogenic variations. Instead, they are likely the result of a combination of genetic and environmental factors. The muscular body of an athlete can be attributed to genetic factors, training, and exercise, while intelligence is influenced by both genetic and environmental factors.
In summary, blastogenic variation can be passed from one generation to the next, but it does not directly contribute to the evolution of new characteristics. Genetic variation, on the other hand, is responsible for the development of new traits over time.