The colour blindness is more likely to occur in males than in females because:

Explanation

Color blindness is caused by a recessive gene located on the X chromosome. Since males (XY) have only one X chromosome, any recessive gene on it will express itself, resulting in color blindness if present. Females (XX), however, have two X chromosomes, so a recessive gene on one can be masked by a dominant normal vision gene on the other X chromosome, making them carriers without expressing the trait. This genetic mechanism explains why color blindness is more prevalent in males. Option A is incorrect because the Y chromosome does not carry the genes for color vision. Option C is incorrect because the trait is not dominant in males; it is simply more likely to be expressed due to their single X chromosome. Option D is incorrect because option B accurately describes the situation.