Friday

alternation of generations

alternation of generations: "A feature of the life cycle of most plants and many lower animals by which successive generations reproduce alternately sexually and asexually."

Thursday

Biology - Level 2 � NZQA

This is a link to the biology resources on the nzqa site. As well as details of all the achievement standards and examples of assessments there is a list of links at the bottom of the page that are worth looking at.



Saturday

Mendelian inheritance - Wikipedia, the free encyclopedia


Mendelian inheritance - Wikipedia, the free encyclopedia: "Law of Independent Assortment (The 'Second Law')
The Law of Independent Assortment, also known as 'Inheritance 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 are independently inherited with a 3:1 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 during meiosis I in eukaryotic organisms, specifically metaphase I of meiosis, to produce a gamete with a mixture of the organism's maternal and paternal chromosomes. Along with chromosomal crossover, this process aids in increasing genetic diversity by producing novel genetic combinations."

Mendelian inheritance - Wikipedia, the free encyclopedia


Mendelian inheritance - Wikipedia, the free encyclopedia: "Law of Segregation (The 'First Law')
The Law of Segregation states that when any individual produces gametes, the copies of a gene separate so that each gamete receives only one copy. A gamete will receive one allele or the other. The direct proof of this was later found when the process of meiosis came to be known. In meiosis the paternal and maternal chromosomes get separated and the alleles with the traits of a character are segregated into two different gametes."

Tuesday

Whitey the silky bantam


An estimated 34 billion chickens existed in our world in 2003.

One question that comes to mind is: Is it right to kill and eat them or to raise them in tiny cages and collect their eggs?

Thursday

Orange Roughy


Much to the olfactory disturbance of the nearby classrooms we attempted to locate and extract the otoliths from an Orange Roughy during our Biology class today.

Friday

Transport in cells

This clip covers active and passive transport.



And for larger molecules

Sunday

Answering Level two and three NCEA Biology Questions

Biology assessment is very language dependent. Paragraphs and short essays tend to be the required response in our external assessments.
The following steps could be useful in putting together a decent answer:

  1. Read the Question
  2. Define any key words (scientific terms)
  3. Take a moment to sketch a quick concept map (related facts and processes) or T chart (comparison, similarities and differences)
  4. Write an answer explaining at least four ideas or terms from you concept map or T chart using any examples given in the question.
  5. Read the question once more. if you are happy with your answer move on.

Wednesday

Possum research assessment

Our next internal assessment is a research project on Possums.

Here are some links that may be useful

Department of conservation

Sunday

Nitrogen cycle


http://upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Nitrogen_Cycle.svg/1000px-Nitrogen_Cycle.svg.png

Tuesday

Cycles and Flows

Energy flows and nutrient cycles.





Wednesday

Year 12 Biology 2010

We start the year with the Ecology topic.