Which is incorrect regarding pedigree analysis

Options

A. It helps to understand whether the trait in question is dominant or recessive
B. It confirms that the trait is linked to one of the autosomes
C. It helps to trace the inheritiacne of specific trait
D. It confirms tht DNA is the carrier of genetic information

Answer

To determine which statement regarding pedigree analysis is incorrect, we will analyze each statement step by step.

### Step-by-Step Solution:

1. **Statement 1: It helps to understand whether the trait in question is dominant or recessive.**
- **Analysis:** This statement is true. Pedigree analysis is indeed used to determine the pattern of inheritance of traits, allowing us to classify them as dominant or recessive based on how they are passed through generations.

2. **Statement 2: It confirms that the trait is linked to one of the autosomes.**
- **Analysis:** This statement is also true. Pedigree charts can help identify whether a trait is linked to autosomes (non-sex chromosomes) or sex chromosomes by observing inheritance patterns across generations.

3. **Statement 3: It helps to trace the inheritance of a specific trait.**
- **Analysis:** This statement is true as well. Pedigree analysis allows researchers to trace the lineage of a specific trait, showing how it has been inherited over generations in a family.

4. **Statement 4: It confirms that DNA is the carrier of genetic information.**
- **Analysis:** This statement is incorrect. While DNA is indeed the carrier of genetic information, pedigree analysis itself does not confirm this. Pedigree analysis focuses on the patterns of inheritance rather than the molecular basis of genetics.

### Conclusion:
The incorrect statement regarding pedigree analysis is **Statement 4**: "It confirms that DNA is the carrier of genetic information."

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