"Sexual Education Q & A 12-15 years old" picture book story PPT

"Sexual Education Q & A 12-15 years old" picture book story PPT

We are the same age Why is it so different?

10 to 15 years old, boys and girls from childhood to adolescence transition. Everybody grows at different speeds, sometimes surprisingly different: among the peers, somebody's body has begun to change while others have not yet begun. But one thing is certain, that is, you will grow into a man or woman in the future.

But at the same time, we are all the same boy in adolescence, girls often have the same way of dressing, eating habits and way of speaking: girls clothing, basketball shoes and syllable upside down the words, are this stage of the "identification mark " You have formed a real group, different from the young and the elderly, you also agree that they belong to this age stage.

What is it?

The sex of a person is determined by the combination of two germ cells, that is, from the female egg cells and the sperm from the male.

All egg cells carry an X-type chromosome, the sperm is with an X-type chromosome or another sex chromosome Y.

A pair of sex chromosomes formed in combination with fertilized eggs determine that we are male or female. If they are the combination of XX type, born girls;

If it is a combination of XY, born boys. In our body hundreds of billions of each living cells, contain our gender genes.