Find an incorrect option w.r.t chromosome inheritance.

Options

A. Occures in pair
B. Segregate at the time of gamete formation such that only one of each pair is transmitted to a gamete
C. One pair segregate independently of another pair
D. Independent pair segregate indepnedently of each other

Answer

To find the incorrect option with respect to chromosome inheritance, we can follow these steps:

### Step 1: Understand Mendel's Contribution
Gregor Mendel is known for his foundational work in genetics, where he proposed that traits are inherited through discrete units, which we now call genes. He established the principles of inheritance, including the concepts of dominant and recessive traits.

**Hint:** Remember Mendel's experiments with pea plants and his laws of inheritance.

### Step 2: Review the Chromosomal Theory of Inheritance
The chromosomal theory of inheritance states that genes are located on chromosomes and that these genes are inherited according to Mendel's laws. It explains how traits are passed from parents to offspring through the segregation and independent assortment of chromosomes during gamete formation.

**Hint:** Think about how genes are arranged on chromosomes and how they are passed during meiosis.

### Step 3: Analyze the Options
1. Genes are in pairs (dominant and recessive).
2. Genes segregate during gamete formation.
3. One pair segregates independently from the other.
4. Independent pairs can segregate from each other.

**Hint:** Compare each statement to Mendel's laws and the chromosomal theory to identify any inconsistencies.

### Step 4: Identify the Incorrect Option
The third option states that "one pair segregates independently from the other." This is true according to Mendel's law of independent assortment; however, it is not always correct due to genetic linkage. Genes that are located close together on the same chromosome do not assort independently and can be inherited together.

**Hint:** Consider the impact of genetic linkage on the independent assortment of genes.

### Step 5: Conclusion
The incorrect option regarding chromosome inheritance is the one that suggests that all gene pairs segregate independently from each other, as this does not account for linked genes.

**Final Answer:** The incorrect option is that "one pair segregates independently from the other," as it fails to consider the effect of linkage between genes on the same chromosome.