Which of the following is a type of hereditary color deficiency?

Which of the following is a type of hereditary color deficiency?

• A. Acquired color vision deficiency
• B. X-linked color vision anomaly
• C. Allergic color vision deficiency
• D. None of the above

Answer: (B)

Hereditary color deficiencies are typically linked to genetic factors, and one of the most common types is X-linked color vision anomalies. This is particularly prevalent in males due to the inheritance of genes that affect the color vision located on the X chromosome. Because males have only one X chromosome, a defective gene on that chromosome leads to a greater likelihood of developing a color vision deficiency compared to females, who have two X chromosomes and thus a backup if one is defective. In this case, X-linked color vision anomalies cover conditions like red-green color blindness, which are inherited and affect the ability to distinguish between certain colors. Understanding this genetic basis is important when considering the prevalence and types of color vision deficiencies. The other options do not accurately describe hereditary color deficiencies. Acquired color vision deficiency refers to changes in color vision due to factors like disease or injury, rather than genetics. Allergic color vision deficiency is not a recognized condition in the context of standard color vision anomalies; color vision deficiencies are typically categorized based on their hereditary nature or acquired factors rather than being associated with allergies. Thus, the focus on X-linked color vision anomalies as a hereditary condition makes that the correct answer.

Hereditary color deficiencies are typically linked to genetic factors, and one of the most common types is X-linked color vision anomalies. This is particularly prevalent in males due to the inheritance of genes that affect the color vision located on the X chromosome. Because males have only one X chromosome, a defective gene on that chromosome leads to a greater likelihood of developing a color vision deficiency compared to females, who have two X chromosomes and thus a backup if one is defective.

In this case, X-linked color vision anomalies cover conditions like red-green color blindness, which are inherited and affect the ability to distinguish between certain colors. Understanding this genetic basis is important when considering the prevalence and types of color vision deficiencies.

The other options do not accurately describe hereditary color deficiencies. Acquired color vision deficiency refers to changes in color vision due to factors like disease or injury, rather than genetics. Allergic color vision deficiency is not a recognized condition in the context of standard color vision anomalies; color vision deficiencies are typically categorized based on their hereditary nature or acquired factors rather than being associated with allergies. Thus, the focus on X-linked color vision anomalies as a hereditary condition makes that the correct answer.