This varies by species but in humans the female gender has cells with two x chromosomes of which one is randomly inactivated. This inactivated chromosome is referred to as the barr body. The male gender has cells with both an x chromosome and a small y chromosome.
Source - Any recent Biology textbook.
Because they are Male and girls are Female. It is in their DNA!
Many parents believe that boys and girls are mentally different. Some believe that it is in the DNA make up that boys act so different and active than girls. What part of the DNA makes that difference scientists havenÕt discovered that yet.
it is so simple boys to girls . who is the people to ask out , boys ask girls . girls do not ask boys.
All boys and girls look different, even identical twins. They all have different genes and DNA.
Boys.
It is for boys AND girls!!
Boys and Girls
If you have a penis, or a vagina. If that option isn't available, then DNA testing. If you have both a penis and a vagina then the term is morphadite.
If you have a penis, or a vagina. If that option isn't available, then DNA testing. If you have both a penis and a vagina then the term is morphadite.
There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.
there are more boys in the world acording to the govament there is 3248080000 boys and there is 3214983000 girls (\___/) (='.'=) ('')-('')
They can be both boys and girls, but usually boys.