The Tautara has a double row of top teeth and the lower teeth fit inbetween the double row. Unique to vertebrates as far as I know.
The Tautara has a double row of top teeth and the lower teeth fit inbetween the double row. Unique to vertebrates as far as I know.
"When I die, I want to die peacefully in my sleep, like Fidel Castro, not screaming in terror, like his victims."
My shameful truth.
Correct Phier! Your turn!
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In Patronicum sub Celsius
Why is it that for most species the sex ratio is 1-1 and what is different in those where it is not?
"When I die, I want to die peacefully in my sleep, like Fidel Castro, not screaming in terror, like his victims."
My shameful truth.
I think I broke the chain again
"When I die, I want to die peacefully in my sleep, like Fidel Castro, not screaming in terror, like his victims."
My shameful truth.
More specific please
More general please. The black widow's propensity to kill mates is highly exaggerated and their sex ratios at hatching are unknown. The question is why would the sex ratio not be 1-1 for say elephant seals but is 1-1 in humans.As to the second, many many things. One instance would be certain species of spider, like the black widow, which has a tendency to kill suitors.
"When I die, I want to die peacefully in my sleep, like Fidel Castro, not screaming in terror, like his victims."
My shameful truth.
well for elephant seals i'd say serious sexual dimorphism, which might lead to dominance hierarchies, like gorilla groups, for example, one male, a group of females, a few juvenile males hanging around.
If you get more dudes who are prone to making dudes then the dudes won't have enough girls and they'll die out, then the girls will take over.
This has since demonstrated itself to not be the case, but it's what I assume you're getting at.
How about ants?More general please. The black widow's propensity to kill mates is highly exaggerated and their sex ratios at hatching are unknown. The question is why would the sex ratio not be 1-1 for say elephant seals but is 1-1 in humans.
Or maybe that's too obvious.
basically any polyamorus species would fit into this, but humans can arguably be called polyamorous in some eras. So I guess I really don't know what you're getting at.
The fenestrae (at least thats's what I think who these large "holes" are called) ?
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In Patronicum sub Celsius
Correct enough. Basically if the cost of making males is the same as making females, any shift in equilibrium will favor the other sex. Even in cases where the species are polygamous.
The issue is with cost again. In species where its cheaper to make one sex over another, due to size or whatever, you will see an unbalanced sex ratio based on that difference.How about ants?
Or maybe that's too obvious.
basically any polyamorus species would fit into this, but humans can arguably be called polyamorous in some eras. So I guess I really don't know what you're getting at.
You were pretty close to correct, and were correct for part one so your turn!
"When I die, I want to die peacefully in my sleep, like Fidel Castro, not screaming in terror, like his victims."
My shameful truth.
"When I die, I want to die peacefully in my sleep, like Fidel Castro, not screaming in terror, like his victims."
My shameful truth.
I have 3 degrees in biology, including 2 advanced ones, and this stuff was barely covered. I only know it because of my reading AFTER my degrees.
A good one to refresh yourself on is 'The Red Queen' by Matt Ridley, you can find it on Amazon or a lot of bigger book stores.
"When I die, I want to die peacefully in my sleep, like Fidel Castro, not screaming in terror, like his victims."
My shameful truth.
Because if the beam was not focused it (the beam) would be dissipated my the strong magnetic fields involved. That's my best guess. this is where i got my info, please correct me if i'm wrong.
Thanks for the Info