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, we will analyze each statement one by one:

1. **Statement (i): All the laws are with exceptions.**
- This statement is **incorrect**. While some laws, such as the law of dominance, have exceptions (like incomplete dominance and co-dominance), the law of segregation has no exceptions and is universally accepted. Therefore, this statement does not hold true.

2. **Statement (ii): Were explained with the use of seven pairs of contrasting traits by Mendel.**
- This statement is **correct**. Mendel conducted his experiments using pea plants and focused on seven pairs of contrasting traits (such as flower color, seed shape, etc.) to establish his laws of inheritance.

3. **Statement (iii): Requirement of meiosis.**
- This statement is **correct**. Mendel's experiments involved sexual reproduction, which necessitates meiosis for the formation of gametes. Thus, this statement is true.

4. **Statement (iv): Can be explained by binomial expression.**
- This statement is **correct**. The ratios observed in Mendel's experiments can indeed be explained using binomial expressions, which help in predicting the probability of offspring genotypes.

5. **Statement (v): Based on Mendel's generalization.**
- This statement is **correct**. The laws of inheritance are fundamentally based on Mendel's generalizations derived from his experimental findings.

Now, let's summarize the correctness of each statement:
- Statement (i): Incorrect
- Statement (ii): Correct
- Statement (iii): Correct
- Statement (iv): Correct
- Statement (v): Correct

**Total number of correct statements: 4**