What are Haploid and Diploid Cells?
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- Опубліковано 7 лис 2021
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#HaploidCells #DiploidCells #biology
SCIENCE ANIMATION TRANSCRIPT: In this video, we will discuss haploid versus diploid cells. Haploid and diploid are terms that describe the number of sets of chromosomes in a cell. Haploid means the cell has only one set of chromosomes. And diploid means the cell contains two sets of chromosomes. In your body, sex cells called Gametes have a haploid number of chromosomes represented by symbol n. In humans, every gamete has one set of 23 chromosomes, so the haploid, or n, number in humans is 23. This is important, since the union of gametes during fertilization creates a diploid cell called a zygote with two sets of chromosomes for a total of 46. At fertilization, the chromosomes from each parent match up to become the new pairs of chromosomes in a zygote. Each pair contains one chromosome from the father and a corresponding chromosome from the mother. These pairs are called homologous chromosomes. Homologous chromosomes are similar in shape and size along with the same types of genes in the same locations. A diploid zygote will go through cell division many times to produce all the cells in the body of a fully developed baby. All body cells except gametes are referred to as somatic cells. In humans, somatic cells are always diploid, written as 2n, which means they have 2 sets of 23 chromosomes for a total of 46 chromosomes. Other organisms have somatic cells with different diploid numbers of chromosomes. But the gametes in these organisms are haploid, meaning they always have half the diploid number of chromosomes. So, how does cell division affect the number of chromosomes in daughter cells? Well, somatic cells only reproduce by mitosis, a type of cell division that results in two genetically identical diploid daughter cells. In contrast, meiosis is a type of cell division that only produces gametes. In meiosis, a diploid cell undergoes two cell divisions to produce four genetically different haploid gametes. We'll cover the details of meiosis in another video. In summary, diploid cells have two complete sets of chromosomes. One set from each parent. Diploid cells have twice the number of chromosomes as haploid cells. The two sets consist of pairs of homologous chromosomes. The diploid chromosome number is written as 2n. All somatic cells, whether they're skin cells, muscle cells, or leaf cells in a plant are diploid. Diploid cells reproduce only by mitosis. And gametes are never diploid. In contrast, gamete cells, which are always haploid, have only one set of chromosomes, which is half the diploid number. Since there's only one set of chromosomes there are no homologous pairs. The haploid chromosome number is written as n. All gametes are haploid. And haploid gametes form from diploid cells through meiosis, never through mitosis. [music]
NSV15017
I watched this 4 1/2 minute video twice and understood it way better than my 1 1/2 hour lesson in school, Thank you!
They show at 0.29 min, 2 haploïds cells, one is with one chromatid per chromosomes, the other with 2 chromatid per chromosomes, so this is wrong and gonna confuse you more.
@@nicolastsokanis2289 oh, well in that case, I take it back 😂
@@nicolastsokanis2289 if it was two haploid cells it would be labeled as two haploid but at 0:29 its labeled haploid and diploid...are talking about the pictures of the cell or something? because I see that they label the haploid cell with one set of chromosome (n) which has 23 chromosomes and a diploid with two sets of chromosomes (2n) 46 chromosomes. seems right to me?
@@kararichard7019 I ll try to explain it in english but not sure i can be understable. At 0.29 if you look the two cells, both has 3 chromosomes. The one to the left is haploïd with 3 chromosomes at 1 chromatides for each one, The one to the left is an ohter haploïd cell with still 3 chromosomes but at 2 chromatides for each one. So for each cell, only the number of chromaides change, not the numbrer of chromosomes. In other words, both cell are n = 3, the one to the left is Q = 3 the other is Q = 6, there is 2x more ADN but still the same number of chromosomes.
@@nicolastsokanis2289 Thanks for clearing the doubt 👍
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The misconception that confused most is that they think there are 23 pairs of chromosomes through out the body but the reality is there are 23 pairs of chromosomes in each cell of the body and every cell contains germ chromosomes
These videos have been amazing for me. I was taking biology in high school when Covid shut everything down, and an already inadequate class got far worse. It wasn't even that we didn't learn anything, but basic stuff like _how cells divide_ wasn't covered, if my memory serves. I'm in college now and I don't take biology, but I feel like I have unfinished business with it and therefore want to learn as much as possible about it. These videos are significantly expediting that self-teaching - thank you so much!
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Omg 🤧🥺..thanks a lot. This haploid and diploid things confused me and now, I well understand it fully thanks to this video. Keep doing the great work. God bless you 💜✨
Sure thing aaaa
They show at 0.29 min, 2 haploïds cells, one is with one chromatid per chromosomes, the other with 2 chromatid per chromosomes, so this is wrong and gonna confuse you more.
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@@nicolastsokanis2289 huh??
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Thank you very much. it took me so long to understand this diploid and haploid. but now after watching this video, i completely understood.
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Thanks! this helped me understand the difference :)
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I am always confused between these two terms . Thank God.. I saw this.. Thanks to you a lot 🥰🥰🥰
2:53 My doubt is in meiosis diploid cell divides into 4 haploid cell, then how it goes for further division, 2n get n, then n get n/2 ??
Huh? I think you’re over thinking it buddy
@@travel_kick
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Thank you so much i understand haploid vs diploid because of you and one again thank you so much
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Very mangnificent video haploid & diploid from consivesness
awesome video. carry on
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Tysm
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Question
Which app do you use in order to do these videos . I want to do like these videos in my creative project but I found it hard . 😊😊😊
Thanks
Useful
Thourghly understood
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is the video good to watch for alevel biology ?
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It should be noted that gametes ARE formed through mitosis in plants, fungi and many protists.
This video needs a disclaimer that some of these rules do not apply to flowering plants (where gametes are produced by mitosis, central cell gametes are diploid, etc.)
Haploid and Diploid are dependent on the no. of chromosomes. Haploid is one set of chromosome and diploid is two. Haploid is meiosis and diploid is mitosis.
thank u
Nice
you're a life saver dude! i'm soo fvcking confused about these two. :)
Sir Or madam pls keep uploading videos still more depth concepts based on neet point of view also 🙏🏻🙏🏻🙏🏻🙂
Kept up
4:10 Question... If diploid cells only reproduce through mitosis , then how are haploid cells formed through meiosis , If its the diploid (2n ) cells that undergo meiosis to produce the (n ) haploid cells . 🤔
Same is my qsn
thanks a lot, one last question; how are chromatids connected with that?
Each chromosome can have one or two chromatids. If they have 2 chromatids they are linked by the centromere and they are identical, since they were synthesized by semi-conservative replication of the DNA, during the S phase of interphase.
Can you explain Histology ?
Studies about tissues is called histology
The video is explains the concepts really well. But has 2 errors in visualization. one at 0:29 and second at 2:00 where chromatids pf the same chromosome are shown but narration is about homologus pair of chromosomes. This creates confusion between the concepts. I hope you can create a new version.
I agree with you, there is a mistake at 0:29. Both cells are showing only three chromosomes. The only difference is that the ones on the left are not replicated adn the ones on the right have undergone semi-conservative replication. But there is no difference in the number of chromosomes, only the number of chromatids.
Diploid also formed by fertilization(n+n= 2n) also by mitosis process
Haploid cells are formed by both meiosis and mitosis
For example when mitosis occurs in haploid cell (in bryophytes alternation of generations ) it produces haploid cell (n) no change in number of chromosomes
When meiosis occurs in diploid (2n) cells it produces haploid (n) cell bcz number of chromosomes sre reduced to half
Hi, thank you for the video! I have one question, like something important that need to be clarified. In 1.58 minutes, you show us that chromosome from father & mother connected to each other and form the shape like an "X". But, as far as I know the X shape is chromatid sister that form because of replication in the interphase not from the fusion of mother's chromosome & father's chromosome. Wdyt?
This video animation is great but misleading at this point in the animation that you refer to. You are correct in your understanding that the x shape is chromatid sister that form because of semi conservative replication in the interphase.
Please Make video on univalent and bivalent chromosomes
Perfect video: " says Einstein "💙
Why the sizw of 21 and 22 are small than the others