HOW NATURE CHOOSES BOY OR GIRL

One major factor (amongst other factors) that determines the sex of the baby is the timing of the intercourse relative to the ovulation day.

The Male Sperm cell is either X or Y; That is, "X-chromosome-bearing sperm" or "Y-chromosome-bearing sperm",The Egg cell is always X, that is X-chromosome-bearing.If an ‘X-sperm cell’ meets the egg cell(X);the baby will be a Girl If a ‘Y-sperm cell’ meets the egg cell (X); the baby will be a Boy Therefore;
X-Sperm Make Girls,
Y-Sperm Make Boys
However;
Y-sperm cells move fast but die fast
X- Sperm cells move slowly but survive longer.

Therefore if you have intercourse some days before ovulation most of the Y-sperms would have died leaving mostly X-sperms. The chances of having a baby Girl is therefore higher.

To increase the chance of a baby Boy, intercourse must be timed to coincide with ovulation. The role of PREDICTE is to tell you exactly when Ovulation will occur.

When you get a positive PREDICTE Result, Ovulation will occur in the next 24-36hrs. You can therefore time intercourse to increase the CHANCE of achieving the desired SEX.

Ovulation ~ The Emergence of an Egg

During your fertile years, each cycle an egg is released from an ovaries during ovulation. An ovary is about the size of a walnut, and you have two, one on each side of your uterus.
When you were born, your ovaries already contained a lifetime supply of eggs. You needn't worry about running out of eggs; your ovaries contained about a million eggs at birth, and though that number dwindles to a few hundred thousand viable eggs remaining by puberty, only around 400 to 500 eggs are actually ovulated during the years between puberty and menopause.
Properly speaking, the correct term for any unfertilized egg is oocyte, pronounced like oh-oh-cyte, as silly as that sounds.

At the right time during your cycle, the ovaries receive a hormonal message that menstruation from the previous cycle has ended, and it's time to begin preparing an egg for ovulation. Inside the ovaries, each egg is encased in its own envelope of cells called a follicle. A number of follicles begin to grow larger, and nurse cells are formed within the follicles to nurture the egg. At some point, one follicle is somehow selected as the dominant follicle, and it continues to grow and mature, while the others are simply reabsorbed. No one is sure exactly how the dominant follicle is selected, but it seems to be a combination of follicle size and hormone level within the follicle. On some occasions, more than one follicle matures, and fraternal twins can result. Fertility drugs can be used to cause many follicles to mature. But the normal situation is that only a single follicle, on one of the ovaries, matures. It was once thought that the ovaries took turns releasing the egg, but it's now believed that whether the right or left ovary releases the egg each cycle is fairly random. Over several days, the follicle continues to grow until it is nearly golf-ball-sized. A mature follicle can be felt during a pelvic exam, and is visible by a vaginal ultrasound. At last, the follicle and the ovary wall burst open, releasing the egg. The egg is quickly rescued from tumbling into the pelvic cavity by the fimbria, fingerlike projections at the end of the fallopian tube. The fimbria draw the egg into the waiting fallopian tube, and it is here that the egg waits to be fertilized by sperm. But the egg's hours are numbered. After literally waiting a lifetime for this moment, the oocyte can survive only 24 hours after ovulation. (In fact recent studies show that the oocyte is only fertilizable for 12 hours only). This is why it is so critical to detect when ovulation occurs (using PREDICTE), if you are trying to conceive and even more importantly if you are trying to select your baby’s sex.

The Incredible Oocyte

The egg is a giantess compared to other cells, in fact it's the largest cell in the human body; at about 100 microns across, it's the size of a small grain of salt, and just barely visible to the naked eye. The egg will need its bulk after fertilization, to support the first cell divisions of the baby-to-be. Human Oocyte, Actual Size

The egg is unique in another way; unlike every other cell in your body, which contains your entire genome in 46 chromosomes, an oocyte contains only 23 chromosomes, destined to combine with a matching set of 23 chromosomes carried by a sperm.The main event of conception is the uniting of the mother and father's chromosomes to form a new, unique human being. Bear with me for a moment while we delve into the fascinating world of your chromosomes.

Chromosomes ~ Your Genetic Blueprint

All of your body's cells contain chromosomes, which are packages of DNA strands; DNA holds the map of your genes. Humans have 46 chromosomes, in 23 matched pairs. One chromosome in each pair was contributed by your father, and one by your mother. Every cell in your body contains your complete genetic blueprint, or your genome, in the 46 chromosomes in its nucleus.
A sex cell (egg or sperm), however, is an exception. Rather than a complete set of 23 pairs of chromosomes, an egg or sperm has only 23 single chromosomes. When the two unite, the chromosomes combine, giving the new cell the proper number of 46 chromosomes.
Take a look at the 46 chromosomes one of your normal cells (not an egg or sperm). What a chromosome actually "looks like" is a complicated question, but we can represent them kind of like this:

Some chromosomes are larger than others, because they contain more DNA. All chromosomes are part of a matched pair, one from your mother, and one from your father (which I illustrated here by coloring them pink and blue). The pair is "matched" because they contain the same genes -- for example, both of your parents contributed a gene for eye color, and of the color of your eyes depends on which gene is dominant.
The last chromosome is different. It's called the sex chromosome, and it determines whether you are a woman or a man. If you're a woman, this chromosome is called "XX", and as you can see, it is a nicely matched pair like the rest of the chromosomes.
For a man, the last pair of chromosomes is called "XY", and they're not a matched pair. The X chromosome, contributed by the mother, matches up with a much smaller Y chromosome contributed by the father. For reasons that aren't fully understood, the X chromosome contains far more genetic material than the Y, and thus it is larger in size. In 2003, the Y chtromosone made headlines around the world when it was mapped by the Human Genome Project.
By the way, the sex chromosome isn't "last" in a biological sense, but is just designated as #23 by convention. Chromosomes actually float around the cell nucleus haphazardly (or at least it seems that way to us), and are simply numbered largest-to-smallest.