Search found 57 matches

by student12
Mon Oct 02, 2006 7:47 am
Forum: Genetics
Topic: GM crops
Replies: 3
Views: 2225

So then what's the point of spending so much money on these plants, if insects are going to develope resistance?
Apart from reduction of the use of insecticide and therefore polluting the environment.
by student12
Mon Oct 02, 2006 7:43 am
Forum: Evolution
Topic: Evolution and gene flow
Replies: 3
Views: 2393

can you please give examples that alter gene pool but not result in evolution?
by student12
Mon Oct 02, 2006 7:40 am
Forum: Genetics
Topic: Golden Rice
Replies: 1
Views: 3415

So after the gold pallets have been shot, some of the rice cells take up that DNA. These cells are then extracted and cultured to produce a GM rice - Golden Rice.
Is this right?
by student12
Mon Sep 25, 2006 1:16 am
Forum: Genetics
Topic: Golden Rice
Replies: 1
Views: 3415

Golden Rice

Does anyone know the methodolgy of how the foreign genes (2 from daffodil, 1 from baterium) are inserted into the rice to produce the modified organism-Golden Rice?
by student12
Thu Sep 14, 2006 9:06 am
Forum: Genetics
Topic: thermal stability temperature
Replies: 1
Views: 1283

thermal stability temperature

the thermal stability temperature in reference to DNA hybridisation, does it refer to half of one hybrid DNA to seperate or does it refer to half the total hybrid DNA to seperate or does it refer to the total hybrid DNA to speperate half way?
by student12
Thu Sep 14, 2006 8:31 am
Forum: Evolution
Topic: Evolution and gene flow
Replies: 3
Views: 2393

Evolution and gene flow

Evolution is the change in genetic material over time within a population. I know that natural selection, and genetic drift can lead to evolution. But does it also include gene flow?
Basically anything that alters a gene pool leads to evolution? eg:mutations
by student12
Thu Sep 14, 2006 8:28 am
Forum: Evolution
Topic: Rapid model of speciation
Replies: 1
Views: 1505

Rapid model of speciation

Does the rapid model of speciation always involve adaptive radiation?
by student12
Thu Sep 14, 2006 8:26 am
Forum: Evolution
Topic: Parallel evolution/divergent evolution
Replies: 0
Views: 1460

Parallel evolution/divergent evolution

How to differentiate b/t divergence and parallel evolution in this case...If one organism undergoes divergent evolution, how do you know if divergent evolution has undergone or parallel evolution? Because divergent evolution can undergone, but due to insufficient time, the features have not changed ...
by student12
Thu Sep 14, 2006 8:11 am
Forum: Genetics
Topic: GM crops
Replies: 3
Views: 2225

GM crops

I have read that some GM crops have been modified to produce their own insecticide. Can this lead to insects being resistant to these crops over time?
by student12
Thu Sep 14, 2006 8:05 am
Forum: Genetics
Topic: Test cross - Independent Assortment and Segregation???
Replies: 4
Views: 3343

hmmm...to be honest these questions are not for homework...these questions are of my own interests, and are confusing me. Therefore, I ask these questions, in hope of finding an answer from those who are more experienced and possibly encontoured these queries already. I am here in search of knowledge.
by student12
Fri Aug 25, 2006 10:22 am
Forum: Genetics
Topic: Test cross - Independent Assortment and Segregation???
Replies: 4
Views: 3343

Is there a reason why my text only refers to the Principle of Independent Assortment in test crosses involving 2 genetic loci, and Principle of Segregation to testc crosses involving 1 genetic loci? b/c the way i interpret from weesper's message is that both these events occur in both crosses involv...
by student12
Fri Aug 25, 2006 10:16 am
Forum: Genetics
Topic: 1 gene = 1 polypeptide
Replies: 3
Views: 8932

because through the process of splicing one parent transcript may be spliced into various alternative forms which can be all be translated into different types of peptide chains for example in different tissues or different stages of development. Doesn't 1 gene code for a polypeptide which can then...