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Does artificial selection cause speciation?
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Transcript
- Breed to our advantage (7)
- Selecting alleles - 2% of maize genes
- Creates a phenotype
- These phenotypes become fixed in the population (3)
- Accelerated change
- Can still interbreed even if diverse
- Dogs and wolves in same species, are interfertile (4)
- Would need longer for true seperation
- we WANT the current species
- Change in phenotype NOT genotype
- GM = artificial speciation
Artificial selection and speciation
Can artificial selection cause speciation?
- Chosen for desirable features (1)
- One or more species created (5)
- Used for pedigree animals and farming
- The effect of natural selection is removed
Selective pressure
- Allele frequency changed
- Change in phenotype retains interbreeding
- Variation reduced (7)
- intense, many generations
- Fast change, diversity
- on alleles
Allele variation
Pedigrees
Does it cause speciation?
Domestication
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