Question

Colour blindness is more likely to occur in males than in females because

• A. Genes for characters are located on the X­ chromosomes
• B. The trait is dominant in males and recessive in females
• C. The Y­ chromosome of males have the genes for distinguishing colors
• D. None of the above

Answer 1

The correct option is A

Genes for characters are located on the X­ chromosomes

The correct option is A.

Explanation of the Correct option:

1. If we are color blind, it means that our perception of color differs from that of most people.
2. Color blindness frequently makes it challenging to distinguish between particular hues.
3. Color blindness typically runs in families.
4. Red-green color blindness is more prevalent in men since it is inherited via the X chromosome.
5. This is due to the fact that males inherit just one X chromosome from their mother.
6. They will suffer red-green color blindness if that X chromosome carries the red-green color blindness gene rather than a normal X chromosome.

Explanation of the Incorrect option:

Option B:

1. The X chromosome is where colour blindness is most frequently inherited as a recessive trait.
2. In genetics, this is referred to as X-linked recessive inheritance.
3. As a result, men tend to experience the disease more frequently than women.

Option C:

1. Red-green colour blindness is more prevalent in men since it is inherited via the X chromosome.
2. The X chromosome houses the gene that causes colour blindness.
3. Red-green colour blindness is hence an X-linked recessive disorder.
4. Red-green colour blindness is a recessive trait, therefore if a female receives one gene that causes normal colour vision and one that causes mutation, she won't have the condition.

Option D:

They will suffer red-green colour blindness if that X chromosome carries the red-green colour blindness gene rather than a normal X chromosome.

Final answer:
Color blindness is more likely to occur in males than in females because genes for characters are located on the X­ chromosomes.