I've heard this is it true??!
Question: That human babies for the first few weeks are neither sex, and it comes later, but for awhile they are sexless.
Answers: That human babies for the first few weeks are neither sex, and it comes later, but for awhile they are sexless.
I'm not sure on that but it sounds like it could be true.
no.
They either have a vagina or a penis.
That is how they determine if it is a girl or boy in the mums stomach.
At the time the egg and sperm unit, the genes decide whether this is going to be male or female so sex is determined very early. Hormones don't kick in until puberty to make us sexually mature, but our sex is determined long before that.
Not exactly.
Human sex is determined by their genes, so a baby is not really sexless, since boys will have XY genes and girls XX. However, how these genes are tripped into working depends on hormones while their mother is pregnant, it's possible for a boy's XY genes to be suppressed because they didn't get the right amount of hormones at the right time and be born with female genitalia.
A few week after they are conceived this is true, before birth. After birth it's done.
Hi there!
That is quite true. They are sexless in the first weeks of pregnancy though.
When they are born you can tell very well if they are male or female.
Yes, the genitalia in early embryonal life are not differentiated.
Mammalian (including human) gonads are bipotential for a short period just after conception. This means they have neither male nor female characteristics. Both duct systems are present in the fetus at this stage.
In humans, the bipotential gonadal rudiments appear during week four and remain undifferentiated until week seven. At this point a gene on the Y chromasome (the SRY or sex determining region in Y gene) is activated if the fetus has an XY chromasomal complement. This gene induces the gonadal rudiments to become testes and the Mullerian (female) duct system is degraded. The end result is a male child.
If however, the fetus is XX, at week seven the gondal rudiments will become ovaries and the Wolffian (male) duct system is degraded. The end result of this process is a female child.
That's the basics, it's a lot more complex than that but the answer to your question is yes, human fetuses do not differentiate sexually until the seventh week of development.