Courses on Khan Academy are always 100% free. Start practicing-and saving your progress-now: www.khanacademy.org/science/a... Chromosomal crossover in Meiosis I
wants to confirm one thing, will germ cell really undergoes the mitosis? Isn't the germ cell fuse with another germ cell to form the first cell and then undergoes the mitosis. So in such case the first cell should be somatic cell.
guan yilin I think you are confusing the germ cell with the gamete. Two gametes fuse to form a zygote, which undergoes mitosis and develops into a foetus. On the other hand, an example of a germ cell is spermatogonium. Spermatogonia can undergo mitosis or meiosis. If a spermatogonium undergoes, meiosis, it will form 4 sperms. However, some spertmatogonia undergo mitosis to produce more spermatogonia so that a person never runs out of spermatogonia.
8:48 for the actual explanation of crossing over
Why does crossing over have significance?
@@randomamerican3287 it increases genetic diversity, basically.
@random American it’s a test question
@@randomamerican3287 the video is on crossing over but is explained very much late.
Thanx💜
"chiasmata, sounds like a horror movie" LOL
Who are you
@@bossone3265 this is he
What
Thanks so much for this, your voice actually aided in my understanding oddly enough xx
I know what you mean
Bruh I shouldn't have taken apart bio I have a lab report due tomorrow and haven't started it it is currently 10:30
Beautiful process to watch, how about a short time lapse of live DNA replication to compliment?
wants to confirm one thing, will germ cell really undergoes the mitosis? Isn't the germ cell fuse with another germ cell to form the first cell and then undergoes the mitosis. So in such case the first cell should be somatic cell.
guan yilin I think you are confusing the germ cell with the gamete. Two gametes fuse to form a zygote, which undergoes mitosis and develops into a foetus.
On the other hand,
an example of a germ cell is spermatogonium. Spermatogonia can undergo mitosis or meiosis. If a spermatogonium undergoes, meiosis, it will form 4 sperms. However, some spertmatogonia undergo mitosis to produce more spermatogonia so that a person never runs out of spermatogonia.
Genes are basically the functional part of dna??
👍👍👍👍
I’m the first comment in 10 months