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Reproductive

reproductive

Relating to reproduction.


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Chicken or egg formed first

... Up to invertebrate has egg laying capability. If we considering the question egg or chicken formed first, we can change it into organism or their reproductive structure (egg) formed first, if we dig the phylogeny of chicken we end up in prokaryotes which is an organism with no egg laying capability. ...

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by josem
Thu Jul 17, 2014 7:14 pm
 
Forum: Evolution
Topic: Chicken or egg formed first
Replies: 5
Views: 789

Human Gamete Compatibility Going Backwards

... with the modern sperm. Maybe back 10,000 or 100K years and try again (the actual time is arbitrary for the question). It seems that at some point, reproductive compatibility would begin a decline. At X years back, you see only 99% compatibility. At X+100K years back, maybe you see 50% compatibility. ...

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by BiologicalRush
Tue Jun 24, 2014 9:01 pm
 
Forum: Evolution
Topic: Human Gamete Compatibility Going Backwards
Replies: 9
Views: 4841

reproductive system

Sounds like homework? Think about what helps the brain signal to the reproductive system to undergo changes. That's two right there. And, while I can't be sure if your teacher has a specific answer in mind, you might add the system that allows the reproductive ...

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by DarwinsBitch
Wed Mar 05, 2014 9:40 pm
 
Forum: Zoology Discussion
Topic: reproductive system
Replies: 1
Views: 2548

reproductive sytem

The reproductive system, like all body systems, is interlinked. The first part of the questions might throw you off a bit. Start by thinking big. Everything in the body needs oxygen and a blood supply, both of which link to ...

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by Babybel56
Fri Feb 28, 2014 8:49 am
 
Forum: Molecular Biology
Topic: reproductive sytem
Replies: 1
Views: 2941

Re: Are predators always smarter than their prey?

... mechanisms. Chemicals known as corticosteroids often become elevated in individuals during stressful conditions. Under these circumstances reproductive and territorial behaviors are suppressed and escape behaviors are promoted instead (Wingfield et al. 1998). Research has shown that corticosteroids ...

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by Gannet
Tue Feb 25, 2014 11:43 am
 
Forum: Zoology Discussion
Topic: Are predators always smarter than their prey?
Replies: 14
Views: 9471
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