Qualification > Sciences
Human BiOlogy.
Deadly_king:
--- Quote from: -L- on October 02, 2010, 05:38:56 pm ---I AM doing Bio for AS. Which'll be next May InshaAllah.
Well, what confused me was when drawing crosses, we do this right,
Gametes- X X and X Y
Which means women have XX but when asked about the chromosome in an ovum there's only an X. :-\
I still don't get it.
--- End quote ---
Ameen :)
Gametes : 1.X 2.X 3.X 4.Y
This means from a woman's normal cell, 2 gametes each having one X chromosome can be formed while a man can provide two gametes, one having an X chromosome while the other contains a Y chromosome.
iluvme:
Thank you Deadly King. :)
+ rep.
Deadly_king:
--- Quote from: -L- on October 02, 2010, 05:52:33 pm ---Thank you Deadly King. :)
+ rep.
--- End quote ---
hey that's alright. I just hope you understood :)
Seems you returned me my +rep :P
iluvme:
Lol, yeah maybe. ;D
Though apparently I gotta spread it after 2 hours. :P
iluvme:
Please explain, the four types of immunity
Active artificial immunity,
Active natural immunity,
Passive artificial immunity,
Passive natural immunity.
Or is there more? These were the four mentioned in the past papers.
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