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Dictionary » B » Bearing down

Bearing down


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Newbie question about the first life

... a nucleus). This type of simpler cell has no mitochondria (plural [singular: "mitochondrion"]). Then came the eucharyotic cells (nucleus-bearing cells), which do have them. I seem to remember having read something about mitochondria having appeared before they were engulfed by a cell ...

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by piscilactovegetarian
Tue Feb 25, 2014 10:21 am
 
Forum: Molecular Biology
Topic: Newbie question about the first life
Replies: 14
Views: 743

Re:

... is not enough for an explanation to be truly scientific. Testing the model in more detail requires careful calculation and measurement bearing on the fitness consequences of menopause. There has been a fair bit of work on this: some supportive, and some conflicting, with the grandmother ...

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by badgertoes
Sat Dec 28, 2013 9:01 am
 
Forum: Evolution
Topic: Gender divison in two opposites is greatest mistake of manki
Replies: 22
Views: 5828

Gender divison in two opposites is greatest mistake of manki

... is not enough for an explanation to be truly scientific. Testing the model in more detail requires careful calculation and measurement bearing on the fitness consequences of menopause. There has been a fair bit of work on this: some supportive, and some conflicting, with the grandmother ...

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by ChrisHoStuart
Tue Oct 15, 2013 12:18 pm
 
Forum: Evolution
Topic: Gender divison in two opposites is greatest mistake of manki
Replies: 22
Views: 5828

Evolutionary mechanisms

... have beneficial mutations like CCR5-Δ32 that gives them immunity from the HIV virus ("Resistance to HIV-1 infection in caucasian individuals bearing mutant alleles of the CCR-5 chemokine receptor gene". Nature 382 (6593): 722–5.) Your last sentence makes no sense.

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by RabbitPhilosopher
Fri Jun 21, 2013 6:51 pm
 
Forum: Evolution
Topic: Evolutionary mechanisms
Replies: 13
Views: 4482

Structure of flower

Structure of Flower: Form Function Peduncle Flower stalk. Receptacle Part of flower stalk bearing the floral organs, at base of flower. Sepal Leaf-like structures at flower base, protects young flower bud. Calyx All the sepals together form the calyx. Petal Located in ...

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by snowfall
Thu May 30, 2013 5:29 pm
 
Forum: Botany Discussion
Topic: Structure of flower
Replies: 3
Views: 3980
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