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Which of the following are reasons for ...

Which of the following are reasons for Mendel's success ? (i) Usage of pure lines or pure breeding varieties
(ii) Consideration of one character at a time
(iii) Maintenance of statistical records of experiments
(iv) Knowledge of linkage and incomplete dominace

A

(i) & (ii) only

B

(i),(ii) &(iii)

C

(i) & (iv)

D

(ii), (iii), & (iv)

Text Solution

AI Generated Solution

The correct Answer is:
To determine the reasons for Mendel's success in his experiments on inheritance, we will analyze each of the four points provided in the question: 1. **Usage of pure lines or pure breeding varieties**: Mendel used pure breeding varieties of garden peas (Pisum sativum) to ensure that the traits he was studying were consistent and not influenced by other genetic variations. This allowed him to observe clear patterns of inheritance without the interference of mixed traits. Therefore, this point is a reason for Mendel's success. 2. **Consideration of one character at a time**: Mendel focused on one trait at a time during his experiments, such as stem height (tall vs. dwarf). This approach, known as a monohybrid cross, simplified the analysis of inheritance patterns and allowed him to derive his laws of dominance and segregation. Thus, this point is also a reason for Mendel's success. 3. **Maintenance of statistical records of experiments**: Mendel meticulously recorded the outcomes of his experiments and applied statistical analysis to interpret the data. This was innovative for his time and helped him establish reliable conclusions about inheritance. Therefore, this point is a reason for Mendel's success as well. 4. **Knowledge of linkage and incomplete dominance**: Mendel did not have knowledge of genetic linkage or incomplete dominance during his experiments. These concepts were discovered later and do not pertain to the reasons for his success. In fact, if he had encountered these phenomena, they might have complicated his findings and hindered the establishment of his laws of inheritance. Thus, this point is not a reason for Mendel's success. ### Conclusion: The reasons for Mendel's success are: - (i) Usage of pure lines or pure breeding varieties: Yes - (ii) Consideration of one character at a time: Yes - (iii) Maintenance of statistical records of experiments: Yes - (iv) Knowledge of linkage and incomplete dominance: No ### Final Answer: The correct options are (i), (ii), and (iii). ---
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