Greeting dear @jyoti-thelight mam, You mentioned in the first question that a child's knowledge, intelligence, personality, looks, speech and actions are all influenced by father and mother which I think is correct. You have used a phrase from medical science and that is though it is the male chromosome that determines whether the fetus is a boy or a girl and you have also said that the father's role in other matters is certainly fifty percent which is a very nice statement. You also give a detailed account of the influence of other parents on a child which is truly admirable. I appreciate your presentation and wish you all the best.