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Transpiration stream

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Pedigree Analysis Question

http://s837.photobucket.com/user/apothemnew/media/newthing_zps81aca40c.jpg.html I need help with this pedigree diagram above (please visit photobucket link above to view) For the first part, i need to find the genotypes using the blanks provided. 2) Afterwards, if A&B are mated, i need to calcul...

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by ApothemCyte
Sat Jan 18, 2014 8:44 pm
 
Forum: Genetics
Topic: Pedigree Analysis Question
Replies: 0
Views: 1036

I Need Help understanding gametes, genotypes and phenotypes

The first question isn't about offspring, it's just about gametes. You don't need to draw a punnett square until the second question. You're doing more work than it is asking you to do. Post Two: lowercase i is recessive and uppercase I is dominant, but there are actually two codominant alleles. I^A...

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by wildfunguy
Tue Oct 29, 2013 3:25 pm
 
Forum: Genetics
Topic: I Need Help understanding gametes, genotypes and phenotypes
Replies: 5
Views: 4059

What makes dominant allele dominant?

It's a matter of gene expression. The phenotype is the expression of the gene. The pathway to expression involves various biochemical interactions. For whatever reason, the expression of one allele overrides the expression of the other. In some instances, it is because one allele isn't actually expr...

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by wildfunguy
Mon Sep 30, 2013 1:06 am
 
Forum: Genetics
Topic: What makes dominant allele dominant?
Replies: 7
Views: 4041

Do chromosomses ever get competitive?

Actually, there could be a pathway between the dominant and recessive protein products. I will speculate about how such a pathway might arise. Suppose there are two versions of the allele that are initially codominant. I will call their protein products "A" and "B". A and B are b...

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by wildfunguy
Sun Sep 29, 2013 2:50 pm
 
Forum: Cell Biology
Topic: Do chromosomses ever get competitive?
Replies: 9
Views: 7102

Population genetics - make inferences from allele frequency

Hi if a mean allele frequency among multiple populations across a whole species distribution is 0.75 or 0.5, can you make any inference about something like dominant-recessive relationship or lethal homozygotes? I assume random mating (no sexual selection), diploid, no drift (genetically well connec...

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by Young
Sun Aug 25, 2013 10:52 pm
 
Forum: Genetics
Topic: Population genetics - make inferences from allele frequency
Replies: 1
Views: 1342
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