AQA Biology unit 4

what did you get for the genetic engineering question where the plants grow slower?

is it to do with protein synthesis using energy so theres less energy for growth?

i'd tell you mr cat, but apparently you're deaf....

i'd tell you mr cat, but apparently you're deaf....

hahahahahahah

I'm still puzzled as to why they specified the scientist was Sri Lankan though haha.

Would you lose marks for leaving it as 0.4422? Instead of as a percentage.

hopefully if evryone has still found this one hard, the grade borders will be pretty low. HOPEFULLY. Lots of wishy-washy questions though. What was the whale question all about!?

hopefully if evryone has still found this one hard, the grade borders will be pretty low. HOPEFULLY. Lots of wishy-washy questions though. What was the whale question all about!?

Yes :/.

It specifically asked for a percentage. Leaving it as 0.4422 is a frequency. They've penalised in the past for stuff like that. Stodgy bastards.

think you had so say that the dna was unique so you could use this equation:

skin samples 1 X skin samples 2/ matching dna

didnt get 44.22 i got something like 48/49%. whats ur workings? mine was p^2 = 0.33 so p= root(0.33). and q is = 1-p so q= 1-root(0.33).
and they wanted the heterozygous ones. so thats 2pq part.

2*(root(0.33)*(1-root0.33)=approx= 2*0.57*0.43 = 0.485... so 0.49 = 49%

i hope im right? did anyone else get similar..?

didnt get 44.22 i got something like 48/49%. whats ur workings? mine was p^2 = 0.33 so p= root(0.33). and q is = 1-p so q= 1-root(0.33).
and they wanted the heterozygous ones. so thats 2pq part.

2*(root(0.33)*(1-root0.33)=approx= 2*0.57*0.43 = 0.485... so 0.49 = 49%

i hope im right? did anyone else get similar..?

very first question, will you get the maek for just putting nitrate?
or would it have to be ammonia?