Select the incorrect statement from the following

Options

A. Galactosemia is an inborn error of metabolism
B. Small population size result in random genetic drift in a population
C. Baldness is a sex-limited trait
D. Linkage is an exception to the principle of independent assortment in heredity

Answer

To solve the question "Select the incorrect statement from the following," we will analyze each statement step by step to determine which one is incorrect.

### Step 1: Analyze the first statement
**Statement:** "Galactosemia is an inborn error of metabolism."
- **Explanation:** Galactosemia is indeed a genetic disorder that affects the body's ability to metabolize galactose, a sugar found in milk and dairy products. It is classified as an inborn error of metabolism because it is a genetic condition present from birth.
- **Conclusion:** This statement is **correct**.

### Step 2: Analyze the second statement
**Statement:** "Small population size results in random genetic drift in a population."
- **Explanation:** Genetic drift refers to changes in allele frequencies in a population due to random sampling effects. This phenomenon is more pronounced in small populations where chance events can significantly impact allele frequencies.
- **Conclusion:** This statement is **correct**.

### Step 3: Analyze the third statement
**Statement:** "Baldness is a sex-limited trait."
- **Explanation:** Baldness is primarily a sex-linked trait, meaning the genes responsible for baldness are located on the sex chromosomes (X or Y). In contrast, sex-limited traits are those that are expressed in only one sex, even though both sexes may carry the genes. Baldness can affect both males and females but is expressed differently based on sex.
- **Conclusion:** This statement is **incorrect**.

### Step 4: Analyze the fourth statement
**Statement:** "Linkage is an exception to the principle of independent assortment in heredity."
- **Explanation:** The principle of independent assortment states that alleles for different traits segregate independently of one another during gamete formation. However, linkage refers to genes that are located close to each other on the same chromosome and tend to be inherited together, which is indeed an exception to this principle.
- **Conclusion:** This statement is **correct**.

### Final Conclusion
After analyzing all the statements, the incorrect statement is:
**C: Baldness is a sex-limited trait.**