Monday 29 November 2021

Clover Genetic Variation

 We know that plants are important to the ecosystem because they photosynthesize. Did you know that some plants are legumes and these are special because they have ROOT NODULES which are nitrogen fixers.  These root nodules are little rooms where Rhizobium bacteria convert nitrogen gas into ammonium and then Nitrobacter bacterium in the soil  converts ammonium into nitrates. Plants can absorb nitrates to make plant protein.  When those plants are eaten by animals, then animals use the nitrogen to make animal protein.  You can say that all the protein on your body (muscles, enzymes, hair, fingernail etc) was built from nitrogen which was fixed by Rhizobium at some point in time.  




ASSIGNMENT:  10 points

Only certain plants contain these root nodules...amongst them are  bean plants and clover plants.   Look at the morphology of clover plants below.  Look on our school grounds  and find AS MANY DIFFERENT GENETIC VARIETIES as you can.  Upload your clover pic with Frog on a doc or ppt and hand in. 


This picture is from research done by Tashiro et al on the genetics of clover plants.  https://www.researchgate.net/publication/250119450_Leaf_Trait_Coloration_in_White_Clover_and_Molecular_Mapping_of_the_Red_Midrib_and_Leaflet_Number_Traits

CREATE A CHART SHOWING

1. Your pictures of the clovers or clover patch
2.  The numbers of EACH TYPE of clover 
3.   Why is it important to keep a species inventory of plants such as clover in an ecosystem?

Wednesday 24 November 2021

A review of meiosis and mitosis

 Although you studied mitosis and meiosis last year, it is worth a look again to make sure you have all the steps down correctly.  This video explains how alleles are connected to the steps of mitosis and meiosis.  I also assume this is familiar from last year.  I recommend watching the Genes, Alleles and Chromatids video first so you understand the terms


Please watch this video.  Also make a note that while gametes are made in organs that are biologically male or female, the gender identity of the person  might be woman, man or nonbinary. 


Mitosis and Meiosis Assignment : you may work in pairs if you wish: 

Answer the following questions on your own paper and photograph this and send it in through teams. Answer in full sentences and draw your answers.

1.  What is Chromatin?  How many strands are there in a human?
2.  How many chromatids are there in a human?
3.  What is the 2n  or diploid number?
4.  What is mitosis used for?
5.  What is meiosis used for?
6.  Define "Gamete"
7.  What is the Haploid number?
8.  What organ makes sperm, what makes egg?
9.  How many chromatids are in a sperm or egg?
10 Draw a fertilization
11.  Draw how sperm cells are made using the number 46 to represent the chromatid number.
12.  Draw and label Chromatin, Chromatid, Sister chromatids, Chromosome.  And show me a homologous chromosome
13.    Draw a mitosis with 2n= 6.  Label the stages in detail. Remember to draw Interphase and show chromatins.
14.  Draw a meiois with 2n=6.   Label the stages.
Again, draw interphase and show the chromatin.
15a. Why does crossing over happen during prophase I?
15b.  What is primary nondisjunction.  What can happen to the chromatid number?

16.  The word chromosome is very tricky it's true definition is:

1 chromosome = 2 identical sister chromatids joined together in a centromere,
What is the other definition and why can it be a very tricky word?

17.  Write the steps of meiosis and mitosis side by side.   (this is at the end of the video)

You can also take a look at this resource.  It is meiosis and mitosis from a college level text book.  This is extended reading for those who are interested in going through biology.  I think many of you can actually handle this level.


Cartoon /20
20 - This stands out in its effort and creativity
18-19. This is done in ink and colour and includes all the details above and the details are all correct.  This is excellent

15-17. This is very good work with effort and correct details.  Some details are not there but most are there and there is excellent quality of drawing and presentation.

10-14. This is a very good start and your work shows creativity.  It is not in colour or ink and looks like a very nice draft

5-9.  This is incomplete but a decent start.


Poem with screen grabs from video
20. Your poem truly stands out.  You show exceptional talent and you include all the details
19-19. Your poem shows talent in writing, with creative and memorable images.  You include all the details above and also your poem rhymes with excellent rhythm.

15-17. This is very good work with effort and correct details.  Some details are not there but most are there and there is excellent quality of writing.

10-14. This is a very good start and your work shows creativity. like a very nice draft

5-9.  This is incomplete but a decent start.

OTHER POSSIBLE FORMAT:
A powerpoint with the information above


YOU MAY ALSO PROPOSE YOUR OWN CREATIVE FORMAT
Let me know if you want to make a video, a dance, a podcast, a news article, an interview...any other format is accepted. 

Wednesday 17 November 2021

November 18: Introduction to Genetics

 Watch my introduction to Genetics video and make notes on it. You may use the notes organizer I provided in class called "The analogy of shoes"






Intro to Genetics ASSIGNMENT /20 marks 
Answer these questions on this worksheet  on a separate paper in ink, or typed. 

Sunday 7 November 2021

Nov 8 lesson: Radioactivity Intro: Alpha, Beta and Gamma decay

Watch the  two videos below and take notes on them.  Please do the following worksheets if you can locate them. 

The section 7.1 worksheet is at the back of the class If you can find it, then work on it.    one answer key is here and the other  Answer key  is here.

The 7.2 half life worksheet is also back there. Look for it and do it. If these cannot be found no worries, work on your labs.

Safety precautions:   Please open all windows, turn on exhaust fan and maintain physical distance. 


TWO worksheets to be handed in through TEAMS: total 5 marks completion each.

Thursday 4 November 2021

DNA Replication

 Watch all three videos on DNA replication. 





This DNA replication Song was made by my students in 2007.  They were grade 11 students taking my bio 12 course.  Their music teacher is the same as your band teacher now.

Assignment 5: Answer the following questions in a creative format

1. Why does DNA replication happen?  Give three reasons
2. a. Draw a nucleotide and identify the 5' end and the 3' end
    b. draw a DNA ladder structure and label the 5' and 3 ' end

3.  Compare and contrast DNA and RNA.
a.  What are they made of?
b. What are their nitrogen bases?
c.  What enzymes synthesize DNA and RNA?
d.  How does DNA polymerase join one nucleotide with another nucleotide?

4.  What are the main steps of DNA Replication.  Include details of what each enzyme does
a.  Helicase
b. Primase
c. DNA pol III
d.  exonuclease
e. DNA pol I
f. ligase

5.  In what direction does DNA polymerase synthesize the new DNA strand?
6.  How is the lead strand different from the lag strand?
7.  What is an okazaki fragment?


Creative Formats:  Choose one format
Draw a cartoon in colour.
Write a poem or rap  that actually rhymes
Sing a song

Evaluation

Cartoon /20
20 - This stands out in its effort and creativity
18-19. This is done in ink and colour and includes all the details above and the details are all correct.  This is excellent

15-17. This is very good work with effort and correct details.  Some details are not there but most are there and there is excellent quality of drawing and presentation.

10-14. This is a very good start and your work shows creativity.  It is not in colour or ink and looks like a very nice draft

5-9.  This is incomplete but a decent start.


Poem
20. Your poem truly stands out.  You show exceptional talent and you include all the details
19-19. Your poem shows talent in writing, with creative and memorable images.  You include all the details above and also your poem rhymes with excellent rhythm.

15-17. This is very good work with effort and correct details.  Some details are not there but most are there and there is excellent quality of writing.

10-14. This is a very good start and your work shows creativity. like a very nice draft

5-9.  This is incomplete but a decent start.

Song
20. your song stands out
18-19. you have  a. brilliant song. which includes all the details and they are correct.
15-17. This is a very good song.  Some details are left out but what talent you have!
10-14. This is a really great song.  It needs to include more of the DNA content
5-9. This is a first draft.

Monday 1 November 2021

Extracting DNA from a strawberry

 MODIFICATIONS:  USE ONLY ONE STRAWBERRY. And cut the recipe for the extraction liquid in half.

CRUSH THE STRAWBERRY MIXTURE FOR AT LEAST 5 MINS



Lab Write up


1.  Write the Purpose of the lab
2.  Your hypothesis:  How did you expect this experiment to turn out?
3.   Your procedure in a STEP BY STEP MANNER .  State the reason for each step.   THIS PROCEDURE IS SO CLEAR THAT SOMEONE ELSE CAN REPLICATE YOUR EXPERIMENT EXACTLY!
4.  Draw your own cartoon of the procedure.  
5.  Write your results.  What did you observe.  Include photos of your experiment.
6.  Write a conclusion which is a paragraph describing what you learned.  
7.  DRAW A PIE GRAPH STATING HOW MUCH EACH PERSON DID PLUS WHAT THEY DID.

in this lab, you may hand in a group lab report: 
EVERY MEMBER OF THE GROUP MUST PARTICIPATE IN CONTRIBUTING SOME PART OF THE LAB.  


EVALUATION   IS OUT OF 25 IN TOTAL and you may work in a group of two or three
5
presentation is out of 5.  
For 5/5 it is typed  with illustrations or photos and emailed HANDED IN THROUGH TEAMS for 4/5 it is pretty good but there are a few spelling mistakes.  for 0-3 out of 5 it is in pencil or messy.  I prefer this to be printed

10
Clear writing is out of 10.  for 9/10 or 10/10, it is written with no English mistakes and it clearly communicates each part of the lab report.    7-8/10  it is very well written     for 5-6/10 some parts are not so clear and the reader must guess what you are trying to say.  0-4/10, it is minimally communicating what happened

10
Paragraphs are insightful and your observations are well done. this is out of 10.
             9-10/10,   your observations and conclusions are well written and logical.  It is brilliant
              7-8/10   your observations and conclusions are very well done
               5-6   your conclusions don't really logically follow from your results
                0-4   your conclusions are not relating to your results at all
     

ACKNOWLEDGEMENTS
write all names and who contributed what including the % of their contribution. so two people who contributed equally would be50%

Introduction to DNA

  Watch my videos on DNA






Here is another video from youtube which explains these concepts in more detail.





Assignment - 15 points

SUMMARIZE THE MAIN POINTS OF DNA NOTES 10 points

A. Summarize the main points of the DNA notes AND the DNA slide show in a Cartoon Format and make a clear photo of this cartoon.  upload your assignment in Microsoft Teams.   Include the details about Watson and Crick and Franklin.

EVALUATION rubric
10 points:  You included all the main points in a colourful, creative format which is written in ink and coloured.  You used humour and creativity and your assignment stands out for showing an understanding of the key points

8-9 :  you include all the main points and you show excellence and creativity. your assignment is in colour and inked

5-7 :  you include most of the main points and your assignment is handed in. It is a good start and  You needed more time to finish this.

2-4:  you handed something in that was not quite complete, although it is a pretty good start

You may do Assignment 3 Aas a poem that rhymes if you don't want to draw.

3B.  take a picture of  your drawing of this worksheet filled out: You may redraw it or edit it in Paint.
5 points