Question

Докажите на примерах ненаследуемость изменений признака, вызванных действием условий внешней среды.

Answer 1

Если ты про фенотип,то ,например,когда беременная женщина летом загорает на солнышке и доходит с оттенка слоновой кости до мулатки,её ребенок,в случае конечно если папа не негр,не родится мулаткой

Answer 2

Understanding the Concept of Non-Inheritance of Environmental Changes

The concept of non-inheritance of environmental changes refers to the idea that changes induced by external environmental conditions during an organism's lifetime are not passed on to its offspring. This concept is a fundamental principle in the field of genetics and evolutionary biology.

Example 1: Acquired Traits

One classic example that illustrates the non-inheritance of environmental changes is the case of acquired traits in organisms. For instance, if a person develops strong muscles through regular exercise, these acquired muscular traits are not passed on to their offspring. This is because the genetic information that determines muscle development is not altered by the environmental changes experienced by the individual.

Example 2: Giraffe Neck Length

Another well-known example is the case of giraffes and their long necks. It was once hypothesized that giraffes evolved long necks as a result of stretching to reach high leaves for food, and that this acquired characteristic was passed on to their offspring. However, this notion has been debunked, and it is now understood that giraffes with longer necks were naturally selected over time due to their ability to access more food, and this trait was passed on through genetic inheritance rather than acquired through environmental influence.

Supporting Evidence from Research

Research in the field of genetics and evolutionary biology provides further evidence for the non-inheritance of environmental changes. Studies have shown that genetic information, which determines an organism's traits, remains largely unaffected by the environmental conditions experienced by the individual. This means that changes induced by the environment, such as physical alterations or acquired characteristics, do not alter the genetic code that is passed on to offspring.

Conclusion

In conclusion, the concept of non-inheritance of environmental changes is supported by various examples and scientific research. It underscores the distinction between genetic inheritance and acquired traits, highlighting the fundamental role of genetic information in determining an organism's characteristics and traits. This principle has significant implications for our understanding of evolution, genetics, and the transmission of traits across generations.