In a dissimilar pair of factor one member of the pair dominates the other.

Answer

**Step-by-Step Solution:**

1. **Understanding the Statement**: The statement in question is: "In a dissimilar pair of factors, one member of the pair dominates the other." We need to determine if this statement is true or false.

2. **Identifying Key Concepts**: The key concepts here are "dissimilar pair of factors" and "dominance." In genetics, factors refer to alleles, which are different forms of a gene. Dissimilar pairs mean that the alleles are not identical (e.g., one is dominant and the other is recessive).

3. **Law of Dominance**: This concept is rooted in Mendel's Law of Dominance, which states that in a pair of alleles, one allele (the dominant one) can mask the expression of the other allele (the recessive one).

4. **Mendel's Experiment**: Gregor Mendel conducted experiments using pea plants to demonstrate this law. He crossed a tall pea plant (TT) with a dwarf pea plant (tt). The resulting offspring (F1 generation) were all tall (Tt), indicating that the tall trait (T) dominated over the dwarf trait (t).

5. **Conclusion**: Since the dominant allele expresses itself in the phenotype while the recessive allele does not, the statement is indeed true. In a dissimilar pair of factors, one member of the pair does dominate the other.

6. **Final Answer**: Therefore, the statement "In a dissimilar pair of factors, one member of the pair dominates the other" is **True**.

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