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=Mount Beauty Secondary College Year 12 Biol Wiki.=

Hope all is well! Mr Matho**
 * Term 2 holiday homework. Here is my response to Stace about Q19, Q6 and Q7 on the monohybrid/dihybrid Q sheet

Heya Stacey,

Don't sound so stressed, its study break time! Q19, you are dead right about no info, lets just say Red Eye is dominant over white eyes at one locus (location of a gene on a chromosome). Use RR pure breeding red, rr for pure breeding white.

Yep, Q6 is confusing. There are two genes (so this would be a dihybrid question). The first is called ebony and a recessive individual has a dark body colour. The second is called 'black' and again a recessive individual would have a dark body colour. (You can tell this because it states that the dark body colour occurs when homozygous, if it was dominant it would occur with both homo and heterozygotes).

Cross is : ee bb X EE BB F1's = Ee Bb (phenotype normal) --- have a go at the others now --

F2's = 9:3:3:1? (but remember any genotype with either ee or bb will be dark)

back cross (cross F1 to recessive parent) EeBb x eebb

If it makes you feel better I have been staring at this question for about 10 mins.

__Question 7: (my thinking while reading through the question)__ the first dot point could say that black is recessive otherwise sometimes you may cross two heterozygotes (which would be black if it was dominant) and get white. the second point says white also looks to be recessive which says that something is strange. Maybe its co-dominant. the third point confirms this is the correct theory. Blue/grey = IBIW (the B and W should be superscript) but I can't do with e-mail. the fourth point. Do the cross and hey presto you get 1:2:1

a) co-dominant because white x black gives grey. b) 1 gene with 2 alleles because when you cross two grey individuals you get a 1:2:1 ratio. c) pick some letters and draw the crosses.

These questions just take lots of practice. The more of them you can do the better.

If you have done all the other questions, fantastic effort. Have fun in Melbourne! ____Tell Phil he needs to send me a txt about work this week,____

Heath Welcome to the Mount Beauty Secondary College Year 12 Biol Wiki!

Hopefully the class will use this page to complete and discuss questions, concepts and to create glossary.

[|Click here to go to our biol subject page on the school website.]

Photosynthesis work for Wednesday 5/3/08
Heya all,

I have made a photosynthesis podcast. There are 2 versions of it. The first version is a m4a file and includes a couple of images from your textbook that will appear as we go through it. (Never done this before!) To play this file on a computer you will need 'quicktime player'. You can find the 'quicktime installer' in the 'biology year 12' folder in my submit work. Just install it on whatever computer you are on, then select the podcast and go to 'file, open with, quicktime player'.

If that does not work the mp3 version of the podcast is also in submit work with no pics. You should be able to run this anywhere.

Make sure you have your textbook and photosynthesis handout when listening to the podcast.

Miss you guys today!!

Mr Matho


 * Respiration PowerPoint Presentations** (if you are at school, download these from the subject page to save your internet credit)

Use these in conjuction with the Respiration Podcasts.