sir, thank you very much for making these videos. you explain topics very easily and make them super clear. thank you very much for contributing this video for free.
Gamets become haploid after first meiosis BUT as double chromosomes (with 2 arms) so you technically have 23 chromosomes in number (haploid) but 2n as DNA material. By undergoing meiosis 2 the haploid becomes actual haploid 23 chromosomes (with one arm) so 1n as DNA material. Primary spermatocyte ----- diploid 46 double chromosomes 4n Secondary spermatocyte ----- haploid 23 double chromosomes 2n Spermatid or spermatozoa the final line of cell division ---- haploid 23 single chromosomes 1n I hope this help.
@@1-nd1es I found out since that it is costumery in many texts to refer to a pair of sister chromatids as chromosomes. Therefore the number is haploid after meiosis 1. I think distinguishing n number from c number a little silly and unnecessary from the current stand point.
Your opinions abt “simplicity” really aren’t necessary. Personally, as a woman, male anatomy IS complicated because it’s not MY anatomy. But female anatomy, which I have, have grown up with, and know about, is simple to me. You’re definitely entitled to your opinions, but it isn’t necessary in an informational video, and is perhaps even harmful, because it makes people less willing to actually learn/research female anatomy because it’s “too complicated”.
sir, thank you very much for making these videos. you explain topics very easily and make them super clear. thank you very much for contributing this video for free.
Correction: gamets become haploid after meiosis 2.
Gamets become haploid after first meiosis BUT as double chromosomes (with 2 arms) so you technically have 23 chromosomes in number (haploid) but 2n as DNA material.
By undergoing meiosis 2 the haploid becomes actual haploid 23 chromosomes (with one arm) so 1n as DNA material.
Primary spermatocyte ----- diploid 46 double chromosomes 4n
Secondary spermatocyte ----- haploid 23 double chromosomes 2n
Spermatid or spermatozoa the final line of cell division ---- haploid 23 single chromosomes 1n
I hope this help.
@@1-nd1es I found out since that it is costumery in many texts to refer to a pair of sister chromatids as chromosomes. Therefore the number is haploid after meiosis 1. I think distinguishing n number from c number a little silly and unnecessary from the current stand point.
correction 7:54 4 spermatozoa from primary spermatocyte not secondary spermatocyte.
Is it the hormones of the anterior pituitary(FSH and LH)? That triggers it?
Nice
Can you tell me what triggers gametogenesis
after puberty it is FSH on Sertoli cells.
Your opinions abt “simplicity” really aren’t necessary. Personally, as a woman, male anatomy IS complicated because it’s not MY anatomy. But female anatomy, which I have, have grown up with, and know about, is simple to me. You’re definitely entitled to your opinions, but it isn’t necessary in an informational video, and is perhaps even harmful, because it makes people less willing to actually learn/research female anatomy because it’s “too complicated”.