Every time, without fail, when Lalo comes up in conversation, he's described as a nice guy. Unfortunately, and everyone agrees, being nice does not teach genetics. His lectures are inarticulate, disorganized, and confusing, often making mistakes and having to correct them. First B- after straight A's. Class could've been interesting. Lost potential

Take genetics/get an overview of what genetics is before taking his class. His lectures aren't only confusing but he also give out many misinformations. Go to office hours because students will correct him in office hours but he won't notify all the students that he made corrections. The WORST final ever because he cannot teach.

He's a sweet guy but a horrible lecturer. He has an awful teaching style and doesn't include important information that ends up on the exam; I basically taught the second half of the class to myself. There were numerous errors on questions for both the second midterm as well as the final. He doesn't even know how to put grades into Canvas correctly

Seriously the worst teacher I have ever had in my life. He doesn't even know what he is saying in the lectures, information is always wrong, and he gets confused about his own content. He always grades everything wrong and there are always answers that he says are correct that are not correct and he has to go back and change them. DO NOT TAKE HIM.

DO NOT TAKE HIM!!! He is the worst teacher I have had at UCSB thus far and wish I would have read the reviews on here before

I feel really frustrated by Lalo and his teaching style. His lectures are very hard to follow and he ALWAYS fails to include important information/ material that is included on the tests, and instead he chooses to breeze over or spend no time reviewing. Going to lecture sometimes feels counterproductive as I feel more confused after the fact.

Lalo literally has a heart of gold. He's one of the few professors that show up every lecture with a smile on his face and genuinely cares so much about his students. Taking bio in the summer runs FAST but keep up with the lectures slides and practice exams and iclicker questions. Test are hard but fair if you study well.

I think that Lalo did a good job lecturing but he would often spend too much time on topics leading to him having to speedrun biotech on the last day. His test questions were also kind of hard as wording was vague. The TA didn't even know the answer. I also wish that there was a greater emphasis on the text book. Just review the slides weekly.

Incredibly hard test giver. Every class I've had with him has been much, much harder compared to many other professors that teach the same classes (MCDB 1A and 101A). Avoid him if you can, the other profs that offer these courses are way more forgiving with the same material.

Lalo definitely cares about his students, and is an all-around friendly guy! He does tend to speak fast though, so I preferred to watch his recorded lectures. His tests are fair, and going to office hours definitely helped prepare me more for them.

This class is definitely challenging regardless of the professor. His exams are hard and you need to study a lot over a long period of time to do well. Do the reader sets and ask questions as soon as you have them because they will add up. Go to office hours and clarify things you need asap. If you do these things you'll do well in the class.

Definitely a teacher that gets too much flak. Having taken MCDB 1A, 1B and now 101A, he has significantly improved clarity and seemed to readjust back to teaching live lectures. Tests are pretty fair, similar enough to his practice exams even if the concepts can get quite confusing. Keep up with the material and its an extremely doable class.

Lalo is the worst professor. He often messes up during lectures and makes contradictory statements that often leave students confused for the exams. He requires so much extra studying and work outside of class. Worksheets, quizzes, two midterms and cumulative final that are hard. I highly recommend avoiding this class as much as you can.

Professor Lalo is genuinely one of the worst professors I have ever had. He is not a good lecturer, backtracks and misses information a LOT. Test questions will be confusing and can be interpreted multiple ways. Condescending professor who is not very understanding when students ask questions in office hours, and seems to dislike women especially.

Although Lalo is genuinely a nice person, his teaching skills are just not up to speed with other professors in the intro bio series. Lecture slides are good and useful when studying, but his lectures are often confusing and not very clear. Exams are doable but contain several errors that trip students up and cause them to waste precious time

Absolutely ridiculous. He is the worst professor I've ever had at UCSB. My biggest regret is to not read the ratings and just decide to take this course. Like others have said, HE CANNOT TEACH!!!!!

Definitely one of the worst professors I have ever had at UCSB. If you do not read the textbook, there's no way to pass the class bc his lectures are just so confusing. He expects students to answer questions about things that I doubt he even knows himself.

I like how he organizes his slides and splits them (Wilton doesn't do this so hid slides are 100+ long). But he only reads off the slides. The test questions are also confusing and a few contained mistakes so watch out.

Lalo is a great person overall and you can tell he is a very intelligent person. However, this doesn't translate well into his teaching. His lectures are incoherent and he manages to backtrack a lot. The only positive about his lectures is that he sometimes adds some jokes. The slides have little to no detail on them, so attending lecture is vital.

You can tell Lalo is a nice man and wants everyone to understand the material, but he simply cannot teach. In lecture he always confuses what he's trying to say and back-tracks, making it almost impossible for the students to understand what's going on. He also only reads off the slides, which are text-heavy and also difficult to understand.

Lalo is a super nice man but the worst professor I have ever had. The lectures make no sense and are all over the place, the tests are super specific and confusing even to the TAs. The averages for tests were 65 every time and he blamed the students for the low average and didnt think to assess the way he was teaching

Lalo is a horrible lecturer and made all of his students suffer. The amount of information you are expected to learn and memorize is insane. He does not answer his emails and explain things very poorly. I am going to have to retake this class because of him.

this is actually the worst lecturer ive ever had. I'm not sure if he knows what he's explaining. He just reads straight off the slides and when he tries to explain further he gets confused and backtracks like 20 times. If you take class with him I wouldn't bother attending lecture just read the book

Seems like a nice guy, but genuinely one of the worst lecturers I've had. Most lectures it felt like him rambling on incoherently about whatever topic he was teaching and it was difficult to learn anything properly. Once he took over bio lectures, I became much more reliant on the book for my learning.