This is the software which I used to create mind maps of the year 12 Biology Achievement standards. It is a free download and quite simple to use.
Main Page - FreeMind: "FreeMind - free mind mapping software"
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Tuesday
Monday
Study class Tuesday 20 Nov 3.30pm B12
Dear Students
The year 12 biology exam is nearly upon us. On Tuesday after school we will run a study class in room B12.
It would be great if you arrived with specific questions or areas of the course that you would like help with.
All year 12 Biology students are welcome to attend this class.
Regards
Mr Edwards
Wednesday
Study Classes
Dear Students
All year 12 biology students are welcome to attend the study classes.
I hope your study is going well and that any exams you have sat have been kind. The following study classes are available on Saturday and Sunday:
- Saturday 17 November from 10.30 in room B12
- Sunday 18 November from 1.00pm in room B8 (please feel free to bring some food to share during the half time break on Sunday)
Regards
Mr Edwards
Study class
Dear Students
I am sorry but I won't be available spell 5 today but if any of you would like to come in after school to room B12 we can do a bit of revision.
I will also hold a study class on Saturday morning from 10.30am.
Regards
Mr edwards
Thursday
Online resource for Gene Expression topic
Here is a great link to a very comprehensive site. Great material for revising genetics and gene expression
http://learn.genetics.utah.edu/content/begin/dna/transcribe/
http://learn.genetics.utah.edu/content/begin/dna/transcribe/
Genotype and Phenotype
Dear Students
This clip was recommended by Mrs Rippon as a good one to watch when you are studying the genetics and variation topic.
This clip was recommended by Mrs Rippon as a good one to watch when you are studying the genetics and variation topic.
Tuesday
Yr 12 Study classes
Dear Students
In the lead up to the external NCEA exams we have scheduled the following study classes;
- Wednesday 7 November spell 4 and 5 in room B8
- Saturday 10 November from 10.30am in room B12
- Wednesday 14 November spell 4 and 5 in room B12
Regards
Mr Edwards
Friday
Study class Saturday in room B12
Dear Students
I will be holding a study class on Saturday morning 3 November starting at 10.30am in room B12. I thought we could look at some practice exam questions and review any aspects of the course you would like to have a fresh look at.
All year 12 Biology students are welcome.
Regards
Mr Edwards
Saturday
Friday
Wednesday
Study Class Friday B12
Dear Students
I do hope you have had a productive holiday studying hard for your Biology exams.
I'm guessing you could have some questions arising from your studies but either way if you would like come to room B12 on Friday 12 October at 11.00am we could look at an exam question or two, or try and answer your important Biology questions.
All Year 12 Biology students are welcome.
Regards
Mr Edwards
Saturday
Tuesday
Punnett Square Fun - YouTube
More essential viewing for the genetics topic
Punnett Square Fun - YouTube: "http://youtu.be/D5ymMYcLtv0"
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Punnett Square Fun - YouTube: "http://youtu.be/D5ymMYcLtv0"
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Introduction to Heredity - YouTube
Please watch this video during our genetics topic
Introduction to Heredity - YouTube: "http://youtu.be/eEUvRrhmcxM"
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Introduction to Heredity - YouTube: "http://youtu.be/eEUvRrhmcxM"
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Meiosis Mendal's laws
Mendel summarized his findings in two laws: the Law of Segregation and the Law of Independent Assortment.
[edit]Law of Segregation (The "First Law")
The Law of Segregation states that every individual possesses a pair of alleles (assuming diploidy) for any particular trait and that each parent passes a randomly selected copy (allele) of only one of these to its offspring. The offspring then receives its own pair of alleles for that trait. Whichever of the two alleles in the offspring is dominant determines how the offspring expresses that trait (e.g. the color of a plant, the color of an animal's fur, the color of a person's eyes).
More precisely, the law states that when any individual produces gametes, the copies of a gene separate so that each gamete receives only one copy (allele). A gamete will receive one allele or the other. The direct proof of this was later found following the observation of meiosis by two independent scientists, the German botanist Oscar Hertwig in 1876, and the Belgian zoologist Edouard Van Beneden in 1883. In meiosis, the paternal and maternal chromosomes get separated and the alleles with the traits of a character are segregated into two different gametes.
- OR
The two coexisting alleles of an individual for each trait segregate (separate) during gamete formation so that each gamete gets only one of the two alleles. Alleles again unite at random fertilization of gametes.
[edit]Law of Independent Assortment (The "Second Law")
The Law of Independent Assortment, also known as "Inheritance Law", states that separate genes for separate traits are passed independently of one another from parents to offspring. That is, the biological selection of a particular gene in the gene pair for one trait to be passed to the offspring has nothing to do with the selection of the gene for any other trait. More precisely, the law states that alleles of different genes assort independently of one another during gamete formation. While Mendel's experiments with mixing one trait always resulted in a 3:1 ratio (Fig. 1) between dominant and recessive phenotypes, his experiments with mixing two traits (dihybrid cross) showed 9:3:3:1 ratios (Fig. 2). But the 9:3:3:1 table shows that each of the two genes is independently inherited with a 3:1 phenotypic ratio. Mendel concluded that different traits are inherited independently of each other, so that there is no relation, for example, between a cat's color and tail length. This is actually only true for genes that are not linked to each other.
Independent assortment occurs in eukaryotic organisms during meiotic metaphase I, and produces a gamete with a mixture of the organism's chromosomes. The physical basis of the independent assortment of chromosomes is the random orientation of each bivalent chromosome along the metaphase plate with respect to the other bivalent chromosomes. Along with crossing over, independent assortment increases genetic diversity by producing novel genetic combinations.
Of the 46 chromosomes in a normal diploid human cell, half are maternally derived (from the mother's egg) and half are paternally derived (from the father's sperm). This occurs as sexual reproduction involves the fusion of two haploid gametes (the egg and sperm) to produce a new organism having the full complement of chromosomes. During gametogenesis—the production of new gametes by an adult—the normal complement of 46 chromosomes needs to be halved to 23 to ensure that the resulting haploid gamete can join with another gamete to produce a diploid organism. An error in the number of chromosomes, such as those caused by a diploid gamete joining with a haploid gamete, is termed aneuploidy.
In independent assortment, the chromosomes that result are randomly sorted from all possible combinations of maternal and paternal chromosomes. Because gametes end up with a random mix instead of a pre-defined "set" from either parent, gametes are therefore considered assorted independently. As such, the gamete can end up with any combination of paternal or maternal chromosomes. Any of the possible combinations of gametes formed from maternal and paternal chromosomes will occur with equal frequency. For human gametes, with 23 pairs of chromosomes, the number of possibilities is 223 or 8,388,608 possible combinations.[3] The gametes will normally end up with 23 chromosomes, but the origin of any particular one will be randomly selected from paternal or maternal chromosomes. This contributes to the genetic variability of progeny.
From Wikipedia
Tuesday
Thursday
Monday
Biology Thursday
Biology Monday was such a success, lets try for Biology Thursday. 10am in room B12 Thursday 12 July. There could be some food provided too.
All 12 Biology students welcome.
Friday
Make Monday Biology Day
Tutorial Monday 9 July at 11.00am room B12.
- exam questions
- recap previous topics
All Biology classes welcome
Tuesday
Sunday
Friday
Tuesday
Crash Course in Biology
Thanks for the great link, Thomas.
the videos that match our current cells topic are number 4, 5, 6, 7, and 8 then 10, 11 and 12.
Biology - YouTube:
'via Blog this'
the videos that match our current cells topic are number 4, 5, 6, 7, and 8 then 10, 11 and 12.
Biology - YouTube:
'via Blog this'
Friday
Monday
Friday
Thursday
Friday
Cell Pancakes 12 Biol AN
I'm not sure how much value this activity adds to the field of cell biology or fine dining but is looks like a lot of fun!
Thursday
Wednesday
Week five Field trip next Week
Our first field trip to 2012 is happening next week on 7 and 8 March with a visit to the rocky shore. This is part of the first internal assessment for 2012 and you will be using the data you collect on the trip to complete the assessment in class over the following week. Make sure you are clear on what is expected and ask your teacher any questions you need to before it all to late.
Insect collection: our collection is going well but don't run out of steam I am sure there are more arthropods to be found in the Hutt Valley. keep bringing them in!
Insect collection: our collection is going well but don't run out of steam I am sure there are more arthropods to be found in the Hutt Valley. keep bringing them in!
Tuesday
The Khan Academy is a educational website that has instructional videos on a wide range of topics, particularly science and mathematics.
I'd like all my students to visit the site and create an account, register me as your coach and view some of the videos and exercises.
This is a link to the site
To add me as your coach see the following image:
Friday
The past week in Year 12 Biology
Ecology continues, we have been looking in some depth at the concept of an organisms niche. One of our main focusses for this part of our course it be able to explain and discuss why organisms live where they do and how they interact with the other organisms living in the same environment. One way ecologist's have sought to interpret this is the concept of an organisms realised niche compared to it's potential niche. This link explains it quite simply.
We have also been back out with our quadrants to do some more sampling of plant communities this time on the front lawn. On this site there is an environmental gradient where the large trees shade the lawn close to the stone fence and as we move to the middle of the lawn it is in full sunlight. In the shady area we find a weed known as Hydrocotyle but this is much less common in the middle of the lawn.
We have also been back out with our quadrants to do some more sampling of plant communities this time on the front lawn. On this site there is an environmental gradient where the large trees shade the lawn close to the stone fence and as we move to the middle of the lawn it is in full sunlight. In the shady area we find a weed known as Hydrocotyle but this is much less common in the middle of the lawn.
 |
Tuesday
Patterns in ecological communities
We are starting the year with ecology and already students have been seen with transect lines and quadrants sampling the distribution of different plants on the upper field close to the boundary with our neighbours.
One side of the fence is a playing field, regularly mown and occasionally sprayed to remove weeds. The other side of the fence was originally playing field as well but for the past three years has not been mown or sprayed.
Results:
Combined results
Detailed results
Kite diagrams: are a good method of representing data in a way that shows the pattern that organism(s) forms in the environment.
 |
| Community survey |
 |
| What percentage of the quadrat is grass? |
Results:
Combined results
Detailed results
Kite diagrams: are a good method of representing data in a way that shows the pattern that organism(s) forms in the environment.
 |
| Data table and Kite diagrams |
Friday
2012
School starts again next week and last year's year 11 students will become the new year 12 students.
For those of you intelligent enough to choose year 12 Biology the course information booklet is on-line now and there is no time like the present to read through it.
The year 12 Biology course has been completely revised with the alignment of NCEA achievement standards to the NZ curriculum document. This has lead to some changes to the content of the course but the big picture is still the same. Life has evolved on this planet and continues to do so, plants capture energy from our local star and pretty much all other life forms depend upon this captured plant energy.
For those of you intelligent enough to choose year 12 Biology the course information booklet is on-line now and there is no time like the present to read through it.
The year 12 Biology course has been completely revised with the alignment of NCEA achievement standards to the NZ curriculum document. This has lead to some changes to the content of the course but the big picture is still the same. Life has evolved on this planet and continues to do so, plants capture energy from our local star and pretty much all other life forms depend upon this captured plant energy.
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