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Parakeratotic nuclei within the horny layer of the epidermis, found in keratosis follicularis.

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Re: Is complexity inevitable?

... - - http://www.ted.com/talks/bonnie_bassler_on_how_bacteria_communicate.html Now it's time to get speculative! Be critical! Throw grains of salt in my eyes! Twin studies reveal that genetic differences can't explain all of the human variation, meaning that each unique genome presents ...

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by wildfunguy
Thu Sep 26, 2013 6:12 pm
Forum: Evolution
Topic: Is complexity inevitable?
Replies: 16
Views: 10692

Structure of flower

... the plant. Corolla All the petals together form the corolla. Stamen Male part of the flower, consisting of the anther and filament, makes pollen grains. Filament The stalk of the stamen which bears the anther. Anther The pollen bearing portion of a stamen. Pollen Grains containing the male gametes. ...

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by snowfall
Thu May 30, 2013 5:29 pm
Forum: Botany Discussion
Topic: Structure of flower
Replies: 3
Views: 6177

Re: Paramecium don't like sugar?

... some Paramecium. I have a cultur of Paramecium. I fed them some yeast that I had put some sugar in for the yeast to grow. I then put some a few grains of sugar (4-5 perhaps) in the drop on the slide. I left and came back and all the Paramecium were no longer moving. Their bodies did not desentigrate ...

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by moonstroller
Tue May 28, 2013 11:37 pm
Forum: Microbiology
Topic: Paramecium don't like sugar?
Replies: 4
Views: 3568

How many pollengrains enter the ovary?

How many pollen grains enter the ovary during pollination. If only one pollen tube enters,one seed should be formed.But how is it possible to form large nuber of seeds in a single ovary?

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by kumar985
Sun Oct 28, 2012 9:32 am
Forum: Botany Discussion
Topic: How many pollengrains enter the ovary?
Replies: 1
Views: 2601

How does seeds formed after pollination?

I guess fertilization can occur many times within one plant. Some flowers might have several ovules. Each ovule contains one ovum. When pollen grains land on the stigma, more than one pollen tubes can be formed and each carries a male gamete to one ovule.

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by AndyYip
Sat Sep 29, 2012 4:20 pm
Forum: Botany Discussion
Topic: How does seeds formed after pollination?
Replies: 1
Views: 4537
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