Which of the following is not a general law of heredity ?

Question

Accepted Answer

Option 1, "Progression," is identified as the correct answer because it is not a recognized general law of heredity. Heredity refers to the transmission of genetic characteristics from parents to offspring, and the established principles governing this process are well-documented in genetics. Let's explore why "Progression" is not considered a general law of heredity and why the other options are indeed related to heredity.

1. **Progression**: This term does not have a specific or recognized meaning in the context of genetics or heredity. While progression can refer to a sequence or development in various contexts, it is not a principle that describes how genetic traits are inherited or expressed in offspring. Therefore, it is not considered a general law of heredity.

2. **Variation**: Variation is a fundamental concept in genetics and heredity. It refers to the differences in genetic makeup among individuals within a population. These differences arise due to mutations, genetic recombination during sexual reproduction, and other factors. Variation is crucial for evolution and natural selection, as it provides the raw material for adaptation and survival. Thus, it is indeed a general law of heredity.

3. **Regression**: In the context of heredity, regression often refers to "regression to the mean," a statistical phenomenon where offspring tend to exhibit traits closer to the average of the population rather than the extremes of their parents. This concept is related to heredity as it describes how genetic traits can be distributed in a population over generations. Therefore, regression is relevant to the study of heredity.

4. **Like begets like**: This phrase encapsulates the principle that offspring tend to resemble their parents due to the inheritance of genetic material. It is a fundamental concept in heredity, emphasizing that genetic traits are passed from one generation to the next, leading to similarities between parents and their offspring. This principle is a cornerstone of genetic inheritance.

In summary, "Progression" is not a recognized law of heredity, making Option 1 the correct answer. The other options—Variation, Regression, and Like begets like—are all integral to understanding how genetic traits are inherited and expressed in living organisms.