If it is true, I will appreciate if somebody can share the proof/source.
I actually saw a proof in an evolution book showing how equal ratios is the stable point. I'll see if I can't find it.
According to the world fact book it is 1.049 male/female at birth, but 0.803 at age 65 and over (as expected, because females on average live longer). It is 0.994 for the total population.
Based on the following data: https://www.cia.gov/library/publications/the-world-factbook/fields/2018.html
Males tend to engage in riskier behavior than females. As a result, their death rates at all ages are higher than for females of the same age.
Incredible information! Thank you for that. How about in the entire animal kingdom? We can't extrapolate data on humans to the entire animal kingdom. If it's true that females are more than males, why? What's the scientific explanation?
It depends, some animals can change their sex based on environmental conditions. Nile crocodiles for instance, where the sex is determined by the temperature during embryonic development. Some nematodes live as hermaphrodites, where males are generated spontaneously 0.01% of the time. I'm not aware of data resources on sex ratios in specific species.
Right, species ratios would likely be an extrapolation of ratios observed in studied populations.
There's a fish, the name of which I'm currently failing to remember which are all female except for one male in any group. If that male dies, the next largest and healthiest female begins a metamorphosis into a male, and it's not a "little thing" either, but entails major morphological changes.
I would add that AFAIK, it is all crocodilians who's gender are determined by temp.
Do you mean throughout the animal kingdom or only humans ?
I know that in some parts of Asia (including India and China), the sex ratios are horribly skewed due to the practice of female infanticide.
Hi Siv, that is indeed true (about the skewed ratios). It's in the link I provided: in the United Arab Emirates there are 2.2 males per female, which is on the top of the list.
Yes, but thats a different phenomenon. Probably common in the Middle East.
What I was talking about is plain infanticide. If the baby is a girl, its killed. Sometimes if they do a 6 month scan and discover its female, they abort. Thats why in most maternity wards and scan centres you'll find the notice saying its illegal to ask for the sex of the child during a scan.
Why is it illegal to ask for the sex of the child? If someone is eager to kill his own child, he'll do it after the birth. It's plain stupid to fight stupid ideas with stupid ideas. Anyway in my country it is not illegal. The birth rate here is 1.06/1 male/female. I think that birth rate can be explained by the different mass of Y an X chromosomes.
Your argument is ridiculous. Provide some data to show that a ban on in utero gender determination is "stupid".
Can you provide data on that as well, as far as I know it is just speculation.
In my country it is legal. Some people want to know. I don't see any benefit of denying them that information. Knowing it can be helpful as you can plan in advance what you will buy for the baby. You can start buying thing appropriate for boy or girl 3 months before the birth instead doing it in hurry. Usually that translates to color choices blue vs. pink, or something like that.
I said "I think", therefore it is speculation.
You answer is shocking. I think it should be clear that the combat against illegal abortions is more important than knowing what color to decorate a room in. I don't know what country you live in, but the fact that the birth ratio is close to average tells me that sex-biased abortions are not a major concern in your region.
Wow, you're nice :tongue2:
The reason they ban in utero determination of the child's sex is because then the people who dont want girls would abort immediately. And its risky to do so after the first trimester.
With that attitude you must also forbid teaching medicine. What if someone decides to learn how to make abortions? BTW, who makes the illegal abortions? I guess that are people having the means and the knowledge to tell the gender of the baby. You must fight the people doing the illegal activities, not the people doing their job.
Betta splendens - Siamese Fighting fish
A fine example of which is currently eyeing me with consternation, wondering how me being over here pounding on these little square things is facilitating the process of it being fed.
Sorry Mon, you're out of line. The onus is not on Upisoft to "show any evidence that it's stupid". His argument can be as simple as "I see no justification for it". Rather, the onus is on you to provide data that shows why the ban is justified in the first place (even if it is "well known").
No, you do not need to forbid teaching medicine. These kinds of abortions are often done without any medical aid, people use needles to extract the fetus or take medications to induce abortion. It is something that is done hidden away from public view and is very dangerous for the pregnant woman. It's something done out of desperateness, because the social status of women is so different from men in those countries.
DaveC: I don't think that saying that something is "stupid" is a reasonable argument.
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