03-12-2005, 08:30 PM
Ameniatha Wrote:Lol Joan...are you sceptic?Nope, just scientifically minded
I believe this is true.....I have two boys myself...and will say no more..
X and Y chromosomes
Sperms and eggs, not so much "lazy", but lifetime expentancy (spelling)
Motion or movement or lack therof ( or laziness) has something to with fertilization, but the gender of the child is determined by the X and Y chromosomes, of which the female gender is the strongest , having no Y in it....
The weaker sex they say......... :2cents:
Sex Chromosomes X-Y
The male gametes or sperm cells in humans and other mammals are heterogametic and contain one of two types of sex chromosomes. They are either X or Y. The female gametes or eggs however, contain only the X sex chromosome and are homogametic. The sperm cell determines the sex of an individual in this case. If a sperm cell containing an X chromosome fertilizes an egg, the resulting zygote will be XX or female. If the sperm cell contains a Y chromosome, then the resulting zygote will be XY or male