• Congratulations to the Class of 2021 on your results!
    Let us know how you went here
    Got a question about your uni preferences? Ask us here
  • YOU can help the next generation of students in the community!
    Share your trial papers and notes on our Notes & Resources page

genetics the code broken (1 Viewer)

Charon.

Member
Joined
Sep 14, 2004
Messages
42
Location
Eastwood
Gender
Male
HSC
N/A
silvermoon said:
with the model question: u know how it says "you undertook an investigation" - did anyone actually do it?
Suprisingly we actually did this one, because our teacher tought it micght be in tha test. We used jelly snakes as chromosomes and pins to represnt the genes. I was also lucky cause they asked the same question in my trial.
 

Jessisbored

Member
Joined
Feb 25, 2004
Messages
246
Location
Eastern Subs
Gender
Female
HSC
2004
I didnt do this experiment so i majorly confused myself using paddlepop sticks and smarties...made me really hungry.
Yeah for the highly variable genes i spoke about introns and that 7 mark question was great!!!! I wrote about 3 full pages coz i didnt want to go overboard for 7 marks. coz 3 marks is about one paragraph.

i was happy that i new multiple alleles and polygenic inheritance coz i wrote it down then read the question and it told you! very cool.

I new it was uracil coz in my trial i guessed it and made sure i knew it this time. coz in my trial some of my yar put 'uracine' my teacher made fun of them from then on
 

phrred

Member
Joined
Aug 1, 2004
Messages
556
Gender
Male
HSC
2004
who else had no idea about linkage except that theyre on the same chromosome...

did we have to talk abt southern blottin etc for the fingerpriting
 

Jessisbored

Member
Joined
Feb 25, 2004
Messages
246
Location
Eastern Subs
Gender
Female
HSC
2004
i gave a one sentence summary of the process but it wasnt asked coz it just asked us to outline the use of highly variable genes. not the process.
 

Tommy_Lamp

Coco
Joined
Jun 9, 2004
Messages
1,716
Location
Northern Beaches
Gender
Undisclosed
HSC
2004
Jessisbored said:
I didnt do this experiment so i majorly confused myself using paddlepop sticks and smarties...made me really hungry.
Yeah for the highly variable genes i spoke about introns and that 7 mark question was great!!!! I wrote about 3 full pages coz i didnt want to go overboard for 7 marks. coz 3 marks is about one paragraph.

i was happy that i new multiple alleles and polygenic inheritance coz i wrote it down then read the question and it told you! very cool.

I new it was uracil coz in my trial i guessed it and made sure i knew it this time. coz in my trial some of my yar put 'uracine' my teacher made fun of them from then on
i used paddle pop sticks with letters on either end, 13 paddle pop sticks, 26 letters. pulled out 2 at random, read one letter off each stick, recorded them as a match, placed sticks back in bucket, repeated till every letter had been used 3 times. observed which letter didnt ever match, assumed they were on the same paddle pop stick.

i made that up on the spot :D
 

*BUCKO*

Member
Joined
Jul 13, 2004
Messages
56
Location
Lake macquarie
didnt have a clue about linkage experiment...so i just modelled crossing over...and labelled linked genes. I thought the questions were really not specific enough!Some of the ones in the middle section....but some of the multiple choice was a bit iffi...could have been any answer for some of them.
 

Jessisbored

Member
Joined
Feb 25, 2004
Messages
246
Location
Eastern Subs
Gender
Female
HSC
2004
Tommy_Lamp said:
i used paddle pop sticks with letters on either end, 13 paddle pop sticks, 26 letters. pulled out 2 at random, read one letter off each stick, recorded them as a match, placed sticks back in bucket, repeated till every letter had been used 3 times. observed which letter didnt ever match, assumed they were on the same paddle pop stick.

i made that up on the spot :D

Good Job! Go the paddle pop sticks
 

malkin86

Active Member
Joined
Mar 11, 2004
Messages
1,266
Gender
Female
HSC
2004
I second-guessed myself for the Uracil.. I thought it was a cough medicine or something... I still wrote it down, but doesn't it sound like a cough medicine?
 

nesstar

Member
Joined
May 5, 2004
Messages
140
Location
Sydney
we did the linkage experiment...just with plastecine...not very exciting...but at the time the teacher stuffed it up at first and then we changed how we did it and so the whole prac was just really really confusing.....so i just went on about modelling meiosis with linked genes...

i didnt like the option very much because while the questions were broad, the testing of the topic was a bit narrow...i expected some of the gene expression/development/HOX etc to come up and human genome....why don't science exams test difficult aspects in the option?? i found my chem option (industrial) similarly stupid. I look at their questions and i think to myself - is it just me, or did i miss the point of this option? Because u dont seem to be examining the point...oh well.
 

PookieMonster

Got bored & left 30/01/05
Joined
Oct 1, 2004
Messages
529
Location
cesspit
Gender
Female
HSC
2004
witht he two graphs.... what was the answers

? im having nightmares over it
 

malkin86

Active Member
Joined
Mar 11, 2004
Messages
1,266
Gender
Female
HSC
2004
As I remember, the answer was that egg-size was polygenic and that blood-type was multiple alleles, and that while blood types are distinct from each other, sizes aren't, so in between the gram sizes there were eggs on the bellshaped curve.
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top