𧏠How X_Y Chromosomes Actually Work
Manage episode 280413975 series 2842376
You think you know, but do you really? Really really? Letâs find out.
Full transcript: https://thealevelbiologist.co.uk/how-x-y-chromosomes-actually-work/
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Chapitres
1. A lot of people might be forgiven for ending up believing that sex itself and in its entirety is contained in chromosomes X and Y⊠(00:00:51)
2. Was there a need to evolve two new kinds of organism, a male and a female, or was it far easier to evolve a counterpart to a default organism⊠(00:02:46)
3. Is there a similar toggle on the X chromosome? No, there doesnât need to be, because once you have a sex trigger, the other sex is simply the standard development⊠(00:04:47)
4. A father will contribute breast size genetic predisposition to his daughter just as a mother will contribute penis size predisposition to her son⊠(00:09:08)
5. More basic genetic qualities can be far more significant in determining peopleâs overall appearance, such as height, hairiness, body type, and extent of sexual characteristics like breast size or muscle mass, than whether they are the female or male... (00:11:55)
6. If the Y chromosome is shrinking, itâs because it doesnât need to be bigger... (00:16:34)
39 episodes