Which of the following traits is often impacted by being sex-linked?

Which of the following traits is often impacted by being sex-linked?

• A. Eye color
• B. Hair texture
• C. Hemophilia
• D. Height

Answer: (C)

The trait that is often impacted by being sex-linked is hemophilia. Sex-linked traits are typically associated with genes located on the sex chromosomes, particularly the X chromosome. Hemophilia is a genetic disorder that affects the blood's ability to clot and is commonly inherited in an X-linked recessive manner. This means that the gene responsible for hemophilia is found on the X chromosome, and males, who have only one X chromosome (XY), are more likely to be affected by the condition if they inherit the faulty gene. In females (XX), the presence of two X chromosomes means that a functional copy of the gene on one X chromosome can often compensate for a defective copy on the other, leading to a lower incidence of hemophilia among females. This characteristic inheritance pattern is what makes hemophilia a classic example of a sex-linked trait. The other traits mentioned—eye color, hair texture, and height—are typically determined by multiple genes and environmental factors and are not predominantly influenced by sex-linked inheritance.

The trait that is often impacted by being sex-linked is hemophilia. Sex-linked traits are typically associated with genes located on the sex chromosomes, particularly the X chromosome. Hemophilia is a genetic disorder that affects the blood's ability to clot and is commonly inherited in an X-linked recessive manner. This means that the gene responsible for hemophilia is found on the X chromosome, and males, who have only one X chromosome (XY), are more likely to be affected by the condition if they inherit the faulty gene.

In females (XX), the presence of two X chromosomes means that a functional copy of the gene on one X chromosome can often compensate for a defective copy on the other, leading to a lower incidence of hemophilia among females. This characteristic inheritance pattern is what makes hemophilia a classic example of a sex-linked trait.

The other traits mentioned—eye color, hair texture, and height—are typically determined by multiple genes and environmental factors and are not predominantly influenced by sex-linked inheritance.