INTRODUCING GENETICS

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Genetics

noun, ( used with a singular verb)
1. Biology. the science of heredity, dealing with resemblances and differences of related organisms resulting from the interaction of their genes and the environment.
Dictionary.com Unabridged. Based on the Random House Dictionary, © Random House, Inc. 2016.

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Genetic variations

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Up to 16 genes control eye colour.

Origin of blue eyes
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Origin of green eyes
The Caucasian mountain area seem to be the point of origin where blue eyes from the south mixed with brown eyes from the north.
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Only 2% of the people in the world have green eyes. This makes it the rarest eye colour in the world.
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The green colour is produced due to the Rayleigh scattering of light in the top layer, or stroma, of the iris, with low levels of melanin in the iris. The blue effect of Rayleigh scattering combined with the brown melanin causes the eye to appear green.
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Origin of white skin

Origin of red hair

Origin of blonde hair

Minion genetics

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A simple and fun way to introduce genetics to learners. 

I started by giving the learners the task of creating Easter eggs minions in April.  For this I have a model building mark out of 10. Then I introduced them to the terminology : monohybrid cross,  gene, characteristic, allele,  variation,  Punnet square,  P1,  and F1.  We also reviewed meiosis, fertilisation and zygote. 

From here we did a variety of crosses and pedigree diagrams.