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Self incompatibility

self incompatibility

(Science: plant biology) Inability of pollen grains to fertilize flowers of the same plant or its close relatives.

acts as a mechanism to ensure out breeding within some plant species, for example in the case of the s gene complex in brassicas.


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The Keyhole Paradox: Challenging universal common descent.

The problem lies in the incompatibility factors between the current reproductive system and the one that, based on the reproductive systems of most mammals, would have existed in the hypothetical state before this reproductive system ...

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by AstraSequi
Tue Feb 07, 2012 5:29 am
 
Forum: Evolution
Topic: The Keyhole Paradox: Challenging universal common descent.
Replies: 5
Views: 3767

The Keyhole Paradox: Challenging universal common descent.

... the barb-receptivity could have provided enough of an advantage to proliferate throughout the entire population, as well. The problem lies in the incompatibility factors between the current reproductive system and the one that, based on the reproductive systems of most mammals, would have existed ...

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by irtree
Tue Feb 07, 2012 3:44 am
 
Forum: Evolution
Topic: The Keyhole Paradox: Challenging universal common descent.
Replies: 5
Views: 3767

Re: Evolution or De-evolution?

It might help if the cause of death was known. If it's something like a genetic incompatibility within the group for extra-seasonal reproduction, I'd suspect that it would be in one or two forms; every individual having a weakness in varying amounts, but all so ...

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by Cat
Wed Oct 26, 2011 7:26 pm
 
Forum: Evolution
Topic: Evolution or De-evolution?
Replies: 52
Views: 30734

Re: Evolution or De-evolution?

It might help if the cause of death was known. If it's something like a genetic incompatibility within the group for extra-seasonal reproduction, I'd suspect that it would be in one or two forms; every individual having a weakness in varying amounts, but all so ...

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by Crucible
Mon Oct 24, 2011 2:47 pm
 
Forum: Evolution
Topic: Evolution or De-evolution?
Replies: 52
Views: 30734

Same Blood Group - Husband and Wife.

... http://www.netdoctor.co.uk/medicines/100005063... i.e Examples : 1. Husband : A +ve Wife : A -ve 2. Husband : B +ve Wife : B -ve An incompatibility arises when an Rh negative woman has a partner who is Rh positive, resulting in an Rh positive baby. If the mother’s and baby’s blood ...

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by prashantakerkar
Sat Oct 15, 2011 7:28 am
 
Forum: Human Biology
Topic: Same Blood Group - Husband and Wife.
Replies: 2
Views: 37669
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