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?
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