Meiosis | Dr Najeeb
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- เผยแพร่เมื่อ 20 ก.ย. 2024
- #medicines #drnajeeb #pharmacology #medicaleducation #drnajeeblectures #meiosis
Meiosis | Dr Najeeb
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▬▬▬▬▬▬▬▬▬▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬
(0:00-2:45)
Definition & Outline: Gametogenesis; Oogenesis & Spermatogenesis; Meiosis & Cytodifferentiation.
(2:47-10:00)
Meiosis in detail: Diploid Early Germ Cells; 23 homologous chromosomes from each parent; defining homologous chromosomes; genes & alleles.
(10:01-13:15)
DNA replication; duplication of chromosomes; chromatids.
(13:17-18:15)
Meiotic division; Spermatogonia & Oogonia; haploid(1n) & diploid(2n); difference b/w "n" and "N".
(18:16-24:25)
Formation of double structured/diploid Primary Gamete: Primary Oocyte(2n) & Primary Spermatocyte(2n).
Short recap.
(24:30-29:30)
Major difference between Meiosis I and Mitosis: Pairing of homologous maternal & homologous paternal chromosomes: (1) Synapsis.
(29:31-34:59)
(2) Cross Over; Exchange of blocks of genes b/w homologous chromosomes from each parent.
(3) Chiasma; unique/recombinant genetic material.
(35:00-40:40)
Alignment; followed by Disjunction; random allocation into daughter cells;
Creation of 2 Secondary Gametes.
(40:41-46:45)
Double structured homologous chromosomes (2N).
Meiosis II: splitting of centromere; end of Meiosis II.
Final result: 4 Haploid single structured (1N) chromosome.
(46:47-51:51)
Recap. Difference of second meiotic division (Meiosis II) b/w males & females.
Purpose of Meiosis; genetic diversity.
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I always thought that your lectures were lengthy and i couldn't sit and listen to them for 1 hour.. but today, after searching soooo much when i couldn't find any good information.. i decided to watch it and ...
OMG, YOU EXPLAINED IT REALLY, REALLY GOOD ... I DIDN'T NOTICE I WAS LISTENING TO IT FOR 50 MINTS ...
PIECE OF ART 😊
THANK YOU SOOOOOOO MUCH
Thank you so much for your kind words! I'm thrilled to hear that you found the lecture engaging and helpful. It means a lot to know that the content resonated with you and that you didn't even notice the time passing. If you have any more questions or need further explanations, feel free to reach out. Thanks again for the positive feedback-its very motivating for me 😊
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The real question is why are you still learning this in med school lmao. This is pre-med af
@@fernsader9261 embryology
Woah
@@fernsader9261the real question is why you're so mad 💀 everyone does this in embryology
For the first time ever in my life , meiosis concepts are cleared to me.
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From where
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It's for collage and medical...not standard in schools. It's just elaborated
Anyone can use it by the way
No doubt
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Glad to see layman here as well
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This is the best video on meiosis ever till date ! Thank you so much sir
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@@izzatkhan8151 abe chut
Best Video on Meiosis Cell division till now...
Thanks a lot ,sir! After so many years,the process of Meiosis is clear to me.
Great job!!!
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The review of the difference between homologous chromosomes, single chromotid chromosomes, and two chromotid chromosomes really helped me in understanding the big picture! Thanks!
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Thanks
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I was just confused in the meiosis stage 1 and 2 because our school teachers don't teach like you and in reference book it is not clearly mentioned
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Watching after 8 years of uploading🤔🤓 April 2020
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Finally I got it. Thank you Dr. Najeeb!!
Very very thanks sir clear my confusion in meosis .I clear my concept
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Best explanation I've seen of meiosis so far. I think I finally understand it. Thank You!
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Glad to hear that
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24:39 cleared my all doubts related meiosis.
Thanks
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ameen
Thankyou dr Najeeb
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Thank you 💓 Stay blessed 💓