Embryo to baby girl or baby boy

Hello readers! This is my first informative blog article. It was difficult to decide what to write for your inquisitive minds. I thought of writing from the beginning — the “beginning of life” — how a female or male embryo turns into a fetus, to a new born and then to a beautiful human being.

It all starts with a pair of cells, an omnipotent female egg and a trigger male egg. These cells have 22 pairs of chromosomes along with 1 pair of sex chromosome. These sex chromosomes consist of a pair of XX (female) and XY (male). All chromosomes divide into 23 single chromosomes, which pair with the other to form a complete cell. A female egg only has X chromosomes and male sperm can either be X or Y, which decides the sex of the fertilized egg.

All fetuses start out with either an XY or XX set of chromosomes. All fetuses are alike until 6-7 weeks of gestation. In the presence of Y chromosome (i.e. in a male fetus) when the Y chromosome is stimulated, Mullerian ducts are stimulated and testicles begin to develop, elongation of penile tissue commences, and the interior aspects are stimulated to grow. In the absence of Y stimulus, Wolfian ducts are stimulated and female genitalia are developed.

So an early fetus has no intrinsic sex. It has the potential to develop into a male or female depending on what genetic factors it is exposed to.

Isn’t that also true how a child develops other qualities based on the environment?