[quote]Nards wrote:
Check for two X chromosomes and you can’t go wrong.*
[/quote]
Sorry Nards.
The sex chromosomes in females consist of XX while the males have XY. Except in the rare case of testicular femization, all XY offspring will be boys and all XX will be girls. Each egg or sperm gets one member of each pair and so has 23 chromosomes. The egg receives one sex chromosome from the mother, and because the mother has two X chromosomes, the egg will always have an X chromosome. When the fatherâ??s sperm joins with the egg, it will also donate 23 chromosomes, on of which is the sex chromosomeâ??either an X or a Y chromosome.
If the egg is fertilized by an X-bearing sperm from its father, then the embryo will have XX, and that baby will be a girl. If a Y-bearing sperm cell fertilizes the egg, then the embryo will have XY, and the baby will be a boy. At about six weeks of gestation, the fetus begins to show sexually specific male or female characteristics. (http://mygenderselection.com/origins-pseudoscience/xx-vs-xy-the-biology-of-gender/)
[quote]Nards wrote:
Check for two X chromosomes and you can’t go wrong.*
[/quote]
Sorry Nards.
The sex chromosomes in females consist of XX while the males have XY. Except in the rare case of testicular femization, all XY offspring will be boys and all XX will be girls. Each egg or sperm gets one member of each pair and so has 23 chromosomes. The egg receives one sex chromosome from the mother, and because the mother has two X chromosomes, the egg will always have an X chromosome. When the fatherâ??s sperm joins with the egg, it will also donate 23 chromosomes, on of which is the sex chromosomeâ??either an X or a Y chromosome. If the egg is fertilized by an X-bearing sperm from its father, then the embryo will have XX, and that baby will be a girl. If a Y-bearing sperm cell fertilizes the egg, then the embryo will have XY, and the baby will be a boy. At about six weeks of gestation, the fetus begins to show sexually specific male or female characteristics. (http://mygenderselection.com/origins-pseudoscience/xx-vs-xy-the-biology-of-gender/)[/quote]
Well, well. I guess it’s perfectly applicable in Thailand after all.