chromosome
Theyre female because males have XY.
Gametes
In humans females are homogametic and males are heterogametic. It is the male biological parent who contributes the sex chromosome that determines the sex of any child.Human females are XX and all their ova carry an X chromosome. Females always give their children an X chromosome.Human males are XY and half their spermatozoa carry an X chromosome and half carry a Y chromosome. Depending on the sex chromosome in its biological father's spermatozoon, a child receives an X or a Y chromosome from its biological father.If a child receives an X chromosome from its father she will be XX and a girl. If a child receives a Y chromosome from its father he will be XY and a boy.
Sex is a biological attribute that refers to the physical and physiological differences between males and females, such as reproductive organs, hormones, and chromosomes. It is typically categorized as male or female based on observable physical characteristics at birth.
The six biological karyotype sexes that do not result in death to the fetus are:X – Roughly 1 in 2,000 to 1 in 5,000 people (Turner’s )XX – Most common form of femaleXXY – Roughly 1 in 500 to 1 in 1,000 people (Klinefelter)XY – Most common form of maleXYY – Roughly 1 out of 1,000 peopleXXXY – Roughly 1 in 18,000 to 1 in 50,000 births
Male
no
The Sex chromosomes
no
When teens have sex, providing it is safe sex, there is no effect. When, who & where you have sex is each individual persons business, not the communities.
There is no way to spontaneously change your biological sex.
sex
sex
sex
sex
Yes
Two aspects of biological sex are chromosomes (XX for female, XY for male) and reproductive anatomy (ovaries and uterus for female, testes and penis for male).