Share B4 - Natural Selection and Genetic Modification (Y10)
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What is Evolution?
the change of characteristics in a species over time
Do bacteria reproduce rapidly or slowly?
rapidly
Name 2 advantages of selective breeding
disease resistance, more meat or milk production, production of desired characteristic e.g., specific flower colour, larger crops
What does GMO stand for?
genetically modified organism
What is natural selection?
organism has a mutation that is advantageous, and that mutation gives them a better chance at survival, so it is passed down (survival of the fittest)
Give an example of natural selection *be SPECIFIC
giraffes with long neck can reach food, they survive, short neck giraffes are disadvantaged
Which type of cell contains chloroplasts and cell walls?
plant
What is selective breeding?
breeding organisms with beneficial traits to create new breeds or varieties
What do we mean by 'ethical'
whether something is right or wrong
what is genetic engineering?
changing one's DNA by inserting genes from someone else's DNA
give 1 benefit of golden rice
increased vitamin A content
what does vitamin A deficiency lead to?
blindness
where did insulin used to be extracted from?
pig/cattle pancreas
In selective breeding, some crop plants are designed to be genetically identical. State why this is an issue.
disease could wipe out all of the crops, leads to food shortage
what disease is insulin used to treat? be specific
type 1 diabetes
name an issue with extracting insulin from the pancreas of an animal
not vegan friendly, may cause a reaction, may be incompatible
