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Biology; Chemistry; Physics: Post your doubts here!

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Being scared does not do any good. :p Chill. ^-^
We'll get A*'s, inshaAllah.
Will you do more papers tonight, or read the book?

Insha'Allah. :')
Umm, I haven't even read the wholee book yet but Im going to read Matters and then Mary Jones book. And I'll read through the past papers.
I will practice p1's tho.

What bout you?
 
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But in 38 it should be A as aa is not possible if you do the crosses... Plus I was asking about 11 .. I wrote 22 . It's 11 There's another question . I don't remember the year but it was something relating to the sperms living in the ovum for 7 days. If you remember please explain that as well. :/
Yeah, the longest fertile period.
See they tell you the life span of both sperm and egg.
Sperm lives, for example two days, and egg 3 so if a sperm is released on day 10th, it can fertilise the egg released on day 12th. If the fertile period is for three days, means egg can be released in any time during. So if egg is released at the end of the day of the fertile period, it can still live for 3 days and if at that time there's any sperm present, it will again be fertilised. So what you have to do is just count the number of days, in which fertilisation can occur.
You got that?
 
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