Question

Below are statements that describe either traits that follow the typical pattern of Mendelian inheritance or sex-linked inheritance patterns. Sort them into the proper place.

Answer 1

The following statements Sex-linked traits:  

• Hemophilia.
• A trait like color-blindness, which affects many more men than women.
• A trait that is linked to the X chromosome.
• These are not equally likely to occur in males and females.

The following statements are Mendelian trait:

• Involves a dominant and recessive allele.
• A trait like eye color or height .
• Predisposition to some diseases like diabetes and heart disease .
• These are equally likely to occur in males and females.

Answer 2

Answer:

sex linked trait

• Haemophilia
• Trait that is linked to X chromosome
• A trait like color-blindness, which affect many more men than women
• These are not equally likely to occur in male and female

Mendelian trait

• A trait like eye colour or height

• These are equally likely to occur in male and female
• Involves a dominant and recessive allele
• Predisposition to some diseases, like diabetes and heart diseases

Explanation:

Sex linked trait are those traits whose inheritance is based on the sex of individuals. The genes are usually located on the sex determining chromosomes as opposed to non-sex determining chromosomes or autosomes.

The frequency of occurrence of sex linked trait is more in a particular sex than the other. For example, baldness is more often found in men than in women, hence, baldness can be said to be sex linked. Other examples include hemophlia, color-blindness, etc.

Mendelian trait on the other hand are traits whose genes are located on autosomes. They inheritance usually follow simple dominance/recessive style and are equally likely to occur in male and female. Examples include hair colour, height, and diseases such as diabetes, etc.