Predators and prey co-evolve, each maximizing their own fitness, but the effects of predator—prey interactions on cellular and molecular machinery are poorly understood. Here, we study this process using the predator Caenorhabditis elegans and the bacterial prey Streptomyces, which have evolved a powerful defense: the production of nematicides. We demonstrate that upon exposure to Streptomyces at their head or tail, nematodes display an escape response that is mediated by bacterially produced cues.
Avoidance requires a predicted G-protein-coupled receptor, SRB-6, which is expressed in five types of amphid and phasmid chemosensory neurons. We establish that species of Streptomyces secrete dodecanoic acid, which is sensed by SRB This behavioral adaptation represents an important strategy for the nematode, which utilizes specialized sensory organs and a chemoreceptor that is tuned to recognize the bacteria. These findings provide a window into the molecules and organs used in the coevolutionary arms race between predator and potential prey.
This article originally appeared in eLife , volume 6, and can be found online at this link. During class, she goes over concepts and does simple problems then you do group problems. Get ready to read Skip class? Test heavy. Jun 1st, Instead of being challenging, she's being harsh. Instead of being compassionate during the pandemic, she's making the whole experience even more dreadful. She doesn't seem to understand that we have lives outside of her class. I take school work seriously but she completely destroyed my will to learn, it's just too overwhelming.
Test heavy Tough grader. May 31st, If you want an easy A this class is NOT for you. If you really want to learn, this class is NOT the right one. It was a hard time taking class with her. She's willing to help her students fail the class. Her materials are so hard to learn.
May 30th, May 23rd, She is a nightmare. Students are giving up, you can see the attendance dropping even though there are quizzes every lecture. This is not a 3 unit course, more like 6 or 9, given the amount of work she throws at us.
Skip class? May 7th, She's a tough grader, but the grading system is clear n reasonable. She's willing to help students outside of the class. I really could learn stats from her class. Respected Lots of homework Accessible outside class. Reviewed: May 20th, May 3rd, This professor has no compassion for students at all. For 16 weeks you have weekly: reading quiz, quiz, homework, midterm and Iclicker quiz. Test heavy Lecture heavy Tough grader. Jan 22nd, I swear she did curve somehow.
No way I get an A with my horrible first exam. Google some tricky questions around the topic and then ask her. You'll understand more and get ready for exams. This semester, I'm blessed with the recording system because many important points that I might look past in normal classroom were on exams. You won't pass. Accessible outside class. If you want an easy A this class might not be for you.
If you really want to learn, this class is the right one. It was a hard time taking class with her, however, I actually could have learned a lot from her. Her materials are so helpful to learn. Check out Similar Professors in the Mathematics Department 5. Jul 8th, For Credit: Yes. Mini-midterms has 2 problems and is based on the homework too. During class, she goes over concepts and does simple problems then you do group problems. Get ready to read Skip class? Test heavy.
Jun 1st, Instead of being challenging, she's being harsh. Instead of being compassionate during the pandemic, she's making the whole experience even more dreadful. She doesn't seem to understand that we have lives outside of her class. I take school work seriously but she completely destroyed my will to learn, it's just too overwhelming. Test heavy Tough grader. May 31st, If you want an easy A this class is NOT for you.
If you really want to learn, this class is NOT the right one. It was a hard time taking class with her. She's willing to help her students fail the class. Her materials are so hard to learn. May 30th, May 23rd, She is a nightmare.
Students are giving up, you can see the attendance dropping even though there are quizzes every lecture. This is not a 3 unit course, more like 6 or 9, given the amount of work she throws at us. Skip class? May 7th, She's a tough grader, but the grading system is clear n reasonable. She's willing to help students outside of the class. I really could learn stats from her class. Respected Lots of homework Accessible outside class.
Reviewed: May 20th,
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