Search found 26 matches

by Lucanus cervus
Tue Jun 05, 2012 11:45 pm
Forum: Evolution
Topic: Why is knowledge on phylogeny important
Replies: 4
Views: 14735

Re: Why is knowledge on phylogeny important

Thanks, that seems logical! It also seems important in a process called "pathogen spillover" (The transmission of infectious agents from a reservoir population (for example commercial bumble bees) to a sympatric wild population). This happens when commercially bred bumble bees are transpor...
by Lucanus cervus
Tue Jun 05, 2012 3:07 am
Forum: Molecular Biology
Topic: what is the purpose of ChIP experiment?
Replies: 1
Views: 3076

Re: what is the purpose of ChIP experiment?

To localize protein binding sites in the DNA. For example sites where transcription factors (proteins, products of other genes) bind. This is important in understanding gene regulation, gene regulation networks. Understanding which genes (the ones that code for transcription factors) affect the expr...
by Lucanus cervus
Tue Jun 05, 2012 12:25 am
Forum: Evolution
Topic: Why is knowledge on phylogeny important
Replies: 4
Views: 14735

Re: Why is knowledge on phylogeny important

I'm going to give a part of the answer myself from something I found on the internet: As an example, consider the plant species Taxus brevifolia. This species produces a compound, taxol, which is useful for treating cancer. Unfortunately, large quantities of bark from this rare tree are required to ...
by Lucanus cervus
Tue Jun 05, 2012 12:00 am
Forum: Evolution
Topic: Why is knowledge on phylogeny important
Replies: 4
Views: 14735

Why is knowledge on phylogeny important

I'm going to extend my question with a specific example: Why is knowledge on phylogeny of insect pollinators (for example bumblebee's) important? I have a compulsory course entitled "Phylogeny and molecular evolution" and I just don't understand why phylogeny is important? Thanks in advance
by Lucanus cervus
Thu Dec 15, 2011 9:01 pm
Forum: Genetics
Topic: What are the limits of genetic engineering
Replies: 9
Views: 10144

Re: What are the limits of genetic engineering

Thank you both for the answers! This is very interesting stuff I have just chosen my dissertation subject and I'm going to explore bacterial biodiversity on Antarctica by means of pyrosequencing and other techniques, and one of the goals is to find genes that code for valuable properties (resistance...
by Lucanus cervus
Wed Dec 14, 2011 10:09 pm
Forum: Genetics
Topic: What are the limits of genetic engineering
Replies: 9
Views: 10144

Re: What are the limits of genetic engineering

Then a last question, does this then fall under "metabolic engineering"? That they engineer a whole pathway, with all the enzymes etc, to yield an organism that is able to cope with dessication. Or is metabolic engineering only used in industrial biotechnology to increase the efficiency of...
by Lucanus cervus
Wed Dec 14, 2011 9:46 pm
Forum: Genetics
Topic: What are the limits of genetic engineering
Replies: 9
Views: 10144

Re: What are the limits of genetic engineering

Ok thank you for your answer!

So I guess the more distantly related the organisms are, the harder it becomes to transfer a certain property?
by Lucanus cervus
Wed Dec 14, 2011 3:30 am
Forum: Genetics
Topic: What are the limits of genetic engineering
Replies: 9
Views: 10144

What are the limits of genetic engineering

I've been wondering for quite some time now, how broad is the phylogenetic range to which genes can be transferred among organisms (by natural occurring horizontal gene transfer or by means of genetic engineering) For example, recently I read a paper about some entomopathogenic nematodes that were u...
by Lucanus cervus
Mon Sep 05, 2011 6:38 pm
Forum: Botany Discussion
Topic: Basal Angiosperms
Replies: 2
Views: 4943

Re: Basal Angiosperms

Nobody who knows how to define basal Angiosperms?

The characteristics that differ from monocotyls en dicotyls

It may be a question on my exam tomorrow

So please help :)
by Lucanus cervus
Sat Sep 03, 2011 8:53 pm
Forum: Botany Discussion
Topic: Basal Angiosperms
Replies: 2
Views: 4943

Basal Angiosperms

Hi! My professor asked me whether Peperomia plants (and Piperales in general) are recognisable as basal Angiosperms. I looked everywhere in my syllabus and on the internet, but can't find a good answer... So my question is: What character states define Basal Angiosperms? I know Peperomia plants are ...
by Lucanus cervus
Wed Jan 26, 2011 3:30 pm
Forum: Genetics
Topic: The use of Cosmids
Replies: 2
Views: 6335

Thanks!
by Lucanus cervus
Wed Jan 12, 2011 2:36 am
Forum: Genetics
Topic: Why do chromosomal deletions occur more at certain regions?
Replies: 1
Views: 2296

Why do chromosomal deletions occur more at certain regions?

I have my genetics exam tommorow and I can't find the answer to the following question: Why do chromosomal deletion occur more at certain regions of chromosomes? So deletions of segments of dna in chromosomes can be due to 1) errors in repair of double strand breaks 2) Crossing over between repetiti...