Find the number of correct statements for laws of inheritance.
(i) All the laws are with exception.
(ii) Were explained with the use of seven pairs of contrasting traits by Mendel.
(iii) Requirement of meiosis.
(iv) Can be explained by binomial expression.
(V) Based Mendel's generalisation.

Options

A. Five
B. Four
C. Three
D. One of may be two

Answer

To determine the number of correct statements regarding the laws of inheritance, let's analyze each statement one by one:

1. **Statement (i): All the laws are with exception.**
- This statement is correct. Mendel's laws of inheritance do have exceptions. For instance, the law of dominance has exceptions like co-dominance and incomplete dominance. Additionally, the law of segregation and the law of independent assortment can be affected by gene linkage.

2. **Statement (ii): Were explained with the use of seven pairs of contrasting traits by Mendel.**
- This statement is also correct. Mendel conducted his experiments using seven pairs of contrasting traits in pea plants (Pisum sativum), such as tall vs. dwarf plants, round vs. wrinkled seeds, etc.

3. **Statement (iii): Requirement of meiosis.**
- This statement is correct as well. Although Mendel did not know about meiosis at the time, his observations about the segregation of traits can be explained by the process of meiosis, where alleles segregate during gamete formation.

4. **Statement (iv): Can be explained by binomial expression.**
- This statement is correct. The inheritance patterns can indeed be represented using binomial expressions, which allow for the calculation of the probabilities of different genotypes and phenotypes in offspring.

5. **Statement (v): Based on Mendel's generalization.**
- This statement is correct. The laws of inheritance are indeed based on Mendel's generalizations derived from his experiments with pea plants.

Now, let's summarize the findings:
- All five statements are correct.

**Final Answer:**
The number of correct statements is 5.

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