GM crops

Genetics as it applies to evolution, molecular biology, and medical aspects.

Moderators: honeev, Leonid, amiradm, BioTeam

Post Reply
student12
Death Adder
Death Adder
Posts: 57
Joined: Wed May 10, 2006 10:36 am

GM crops

Post by student12 » Thu Sep 14, 2006 8:11 am

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?

wbla3335
Coral
Coral
Posts: 227
Joined: Thu Aug 17, 2006 7:20 am

Post by wbla3335 » Thu Sep 14, 2006 9:21 am

Yes, the insects can become resistant to the insecticide.

student12
Death Adder
Death Adder
Posts: 57
Joined: Wed May 10, 2006 10:36 am

Post by student12 » Mon Oct 02, 2006 7:47 am

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.

wbla3335
Coral
Coral
Posts: 227
Joined: Thu Aug 17, 2006 7:20 am

Post by wbla3335 » Mon Oct 02, 2006 11:40 am

The point is to make money before too much resistance develops. The development of resistance, though, can be slowed by planting non-GM varieties nearby that act as refuges for the non-resistant bugs. These bugs then breed with those who can eat the GM varieties, thereby keeping the resistance alleles at lower frequencies in the total populations.

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest