Have you ever heard of Men who marry another woman, for their 'wives being incapable' of giving birth to a 'Baby Boy'? If not, lucky you! I always wonder why on this Planet Earth, people crave so much for a 'Baby Boy'? May be they think their Gene is (in)valuable and only Mr. Boy can actually Drop it down the generation lane!!
Even in my family, I was born following two elder sisters and "If at all you were not born boy, I might have had a tough time with in-laws" said Mom once. Today, I still do not find any valid reasons, to substantiate the necessity of a baby being born boy than a girl. Both of them, either a boy or a girl, at the end of the day are Human Beings; also, they both have every equal right to be born and make a living.
According to Cytology, all (normal) human beings have 23 pairs of chromosomes (totally 46 chromosomes); out of which 22 pairs are autosomes and only 1 pair is sex chromosomes. These sex chromosomes are basically responsible in determining the Sex of an individual. A normal individual with 'XX' sex chromosomes is a Female and one with 'XY' sex chromosomes is a Male. During fertilization, a zygote (baby) is formed by one sex chromosome each from male (father) and female (mother). If both male and female contributes 'X', then the zygote is 'XX' (female); If male contributes 'Y' and female (can only) contribute 'X', the zygote is 'XY' (male). This is the 'XY Sex-Determination System' of human beings in a nutshell.
Biologically speaking, the crucial part of sex determination is played by the Y-Chromosome or in other words (normal) sex determination is solely dependent on male (father) alone. Although the process of sex determination is highly unpredictable and is a mere chance factor, it is crystal clear that female (mother) cease to share the responsibility in determining the sex of a normal zygote (baby).
For no reason and no fault of theirs, Women are being made responsible for the birth of a baby girl and are subjective victims of inhumane social torture from ages now. But, being truly responsible, Men have been safely enjoying a comfortable position in the family and society. It isn't forgotten that 'ours is a male-dominant society'; though male-dominance itself is a highly questionable debate, it definitely otherwise shouldn't authorize to 'torture women'.
With all the physiological pleasure and pressure of the 9-month long pregnancy, Women also are ably taking the curse and tolerating the social harassment in Silence. Isn't it now necessary to brand Men (with a red-hot iron) to be responsible for the sex of the baby born; and from the bottom of the heart say to Women 'Hats Off' & end her sufferings??