Mutations. It is a CHANGE in a cell's genetic material What is a MUTATION?
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Transcript of Mutations. It is a CHANGE in a cell's genetic material What is a MUTATION?
1. Ecological disbalance
One vivid example:Over the last 5 years USA has been unable to produce sufficient crops to feed the country due to its failure to defeat some mutated weeds resistant to any known
chemical
2. Diseases50 years ago nearly 40000 people in USA were diagnosed with
leukaemia every year – 22000 of them died
Today nearly 150000 people in USA are diagnosed with leukaemia –
80000 of them die
2. Diseases50 years ago nearly 20 Americans died each day
from skin cancer
Todaynearly 45 Americans die each day from skin cancer
2. Diseases
50 years ago albinism was found only in 5 per 100,000 of Americans and Europeans, in 20 out of 100,000 Africans
Today these figures have risen to 40 and 150 per 100,000 corrispondingly
3. Physical disorders50 years ago physical abnormalities were mostly exceptions and
accounted for less than 0,1% of the globe’s population
Today every 50th individual on the Earth has some physical abnormalities
3. Physical disorders50 years ago people were struck by the story of a 2-year-old Indian girl
Lakshiri Tatma born with 8 limbs
Today this is not a rare case
4. Super viruses50 years ago most dangerous viruses were
AIDS, hepatitis, bird flu
Today we have all in all 11 super viruses. One of them is
papillomavirus, or HPV
5. Poor reproduction
50 years ago infertility in USA accounted for 2,2% of the population
Today this figure amounts 10,5%
2. Radioactivity
Average radioactivity in the world today is roughly 3 times as intense as 50 years ago
It has increased from 2,4 mSv/year in 2008 to 6,9 mSv/year (the norm is 5,0mSv/year)