In XO system a male has a mother but not a _____________(a) Grand father(b) Father(c) Grand mother(d) SiblingThis question was addressed to me by my school principal while I was bunking the class.I'd like to ask this question from Other Methods of Sex Determination topic in division Chromosomes and Sex Determination of Cytogenetics

In XO system a male has a mother but not a _____________(a) Grand fath

1.	In XO system a male has a mother but not a _____________(a) Grand father(b) Father(c) Grand mother(d) SiblingThis question was addressed to me by my school principal while I was bunking the class.I'd like to ask this question from Other Methods of Sex Determination topic in division Chromosomes and Sex Determination of Cytogenetics
Answer» Right option is (b) Father Easy explanation: The MALES are produced by parthenogenesis, i.e. by mitosis. While fertilization only takes place in case of a FEMALE child, only the two X chromosomes COME TOGETHER. Thus, the male has a mother but no father; they do however have a grandfather.

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