Read the given paragraph and answer the question:

Humans have 23 pairs of chromosomes. 22 pairs are exactly same in both males and females; these are the autosomes. A pair of X-chromosome are present in the female, whereas the presence of an X and Y chromosome are determinant of the male characteristic. A number of disorders in human beings have been found to be associated with the inheritance of changed or altered genes or chromosomes. Broadly, genetic disorder may be grouped into two categories disorders and Chromosomal disorders.

A colour blind man marries a carrier woman. Choose the possible progeny outcome.

50% of daughters and 50% of sons born will be colour blind.

The correct answer is Option (4)- 50% of daughters and 50% of sons born will be colour blind.

Color blindness is a genetic condition caused by a mutation or deficiency in certain genes responsible for color vision. It is typically inherited in an X-linked recessive pattern.

When a color blind man (let's represent his genotype as X^CY, where X^C denotes the X chromosome with the color blind allele and Y represents the Y chromosome) marries a carrier woman (XX^C, where X represents the normal X chromosome and X^C represents the X chromosome with the color blind allele), the possible outcomes for their children are as follows:

1. Sons: 50% will inherit the X^Cchromosome from the mother and Y from father, making them color blind (X^CY). Daughters: 50% will inherit the X^Cchromosome from the father (X^CX) and normal X from mother, making them carriers (heterozygous) of the color blind allele. They will have normal color vision because they also inherit the normal X chromosome from the mother.
2. Sons: 50% will inherit the X chromosome from the mother and Y from father, making them normal (XY). Daughters: 50% will inherit the X^C chromosome from the father and X^C from mother (X^CX^C), making them color blind.

Therefore, option 4 is correct because it represents the possible outcomes based on the inheritance pattern of X-linked recessive color blindness.