MEIOSIS + GENE MUTATIONS - AQA A LEVEL BIOLOGY + EXAM QUESTION RUN THROUGH
*Sorry about the last 2 minutes being messed up, I can't seem to fix it!*
In this video, I explain ALL of the content that you need to know for the "Genetic diversity can
arise as a result of mutation or meiosis" section for AQA A Level Biology. Time stamps are in the comments section. The content crosses over with other exam boards too. I also go through a few exam questions and explain the mark schemes. Please comment if you have any questions! :)
More information on Duchenne Muscular Dystrophy: www.musculardystrophyuk.org/a...
Пікірлер: 34
00:28 = What is a gene mutation? 00:56 = Substitution mutations 03:05 = Deletion mutations 04:53 = Chromosomal mutations 06:02 = Overview of meiosis/ how it differs from mitosis 08:34 = How meiosis generates variation- CROSSING OVER 10:38 = Independent segregation of homologous chromosomes 12:51 = Exam questions and mark schemes
even 3 years on, you are extremely helpful and better than most teachers.
@user-bc5wy2dk2b
2 ай бұрын
ONG
Something went wrong with the audio and the screen froze at the end! Sorry about that but hopefully you can still see what I put!
Why didn't i find u sooner?
@AlevelBiologyHelp
3 жыл бұрын
😁😁😁
thankyou so much!! i often find it easier to watch a video rather than just read pages of the textbook, so this is really helpful!
@AlevelBiologyHelp
3 жыл бұрын
Glad I could help :)
I swear you've been such a big help to me.
Great video! I’ve been watching your videos for revision and they are very helpful :)
Deserve more subs and views
Thank you so much! I love your channel. You always make everything so clear 😊 I’m finally understanding things.
@AlevelBiologyHelp
3 жыл бұрын
Thank you so much 💕
love your video really helpful thankyou
Hey, I love your videos! But do we not need to know more detail about the stages of meiosis II?
Excellent explanation , classifying it to mendelian disorders will be more excellent because the mutation of single gene comes in mendelian disorder like sickle cell anemia which is autosomal recessive disorder.
@AlevelBiologyHelp
3 жыл бұрын
You're right! Mendelian inheritance is discussed in the Inheritance chapter, which is part of the A2 content! That's why I didn't cover it👩🔬.
@aswinskumar3997
3 жыл бұрын
@@AlevelBiologyHelp cool 😄 I understand
Do we not need to know further detail how trisomy or polyploidy occurs
my teacher taught us about missense, silent, nonsense and insertion mutations as well as the ones u mentioned in the video I was just wondering is it essential I know about it bcs its not on the mark scheme. so I'm just wondering in doing AS
@AlevelBiologyHelp
3 жыл бұрын
Hi! For AS, you only need to know about substitution and deletion (also chromosomal mutations). For A2, you need to know about addition, deletion, substitution, inversion, duplication and translocation of bases :)
@courtneyxo631
3 жыл бұрын
@@AlevelBiologyHelp ohhh thank uu
@Lavin.
5 ай бұрын
@@AlevelBiologyHelp is there a video for that?
@AlevelBiologyHelp
5 ай бұрын
Yes :)@@Lavin.
@Lavin.
5 ай бұрын
@@AlevelBiologyHelp whats it called please?
Hi is there a video on mitosis by any chance?
@AlevelBiologyHelp
2 жыл бұрын
Yes - it's called "cell cycle and mitosis"
@gewty8860
2 жыл бұрын
@@AlevelBiologyHelp found it tysmm!
Do we need to know about the PMAT of meiosis
@ding-dongditch8773
2 жыл бұрын
no u dont, that's in year 2
@AlevelBiologyHelp
2 жыл бұрын
Yes, you do :)
@ding-dongditch8773
2 жыл бұрын
@@AlevelBiologyHelp i love you
2:51 what do you mean by single amino acid
@hannahbell4759
2 жыл бұрын
I think she meant single base