Accepted Answer
Answer:The correct answer would be Y-chromosome analysis.Y-chromosome analysis is technique used to search the parental line of a boy on his father's side. Gender of a person is determined by [tex]23^{rd}[/tex] chromosome in humans. XX is present in females and XY is present in males.Mother always passes X chromosome to her progeny but father passes both X and Y chromosomes. If X is passed from the father then the offspring will be a girl and if Y is passed from the father then the offspring will be the son.The sons (F₂) of this son (F₁) will also bear the same Y chromosome as that of grand father (P). Thus, Y chromosome always passes from father to son and hence, Y-chromosome analysis can help in identification of father of this young boy.
Suggested Answer
y chromoson as men have the y chromosone and so would the boy but woman have x