Speciation (AQA A-Level Biology): Flashcards
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Speciation
Speciation
Process where new species develop from existing ones
Species definition
Species definition
Group that can interbreed to produce fertile offspring
Allelic frequency
Allelic frequency
How often a specific allele occurs in the gene pool
Gene pool
Gene pool
All alleles from every gene in all individuals of a population
Genetic drift effect in small populations
Genetic drift effect in small populations
More pronounced; each allele has greater impact on gene pool
Allopatric speciation
Allopatric speciation
Speciation via geographical separation by physical barriers
Sympatric speciation
Sympatric speciation
Speciation in same area without physical separation
Temporal isolation
Temporal isolation
Populations have different breeding seasons
Role of reproductive separation in speciation
Role of reproductive separation in speciation
Prevents interbreeding, allows genetic divergence
Mule sterility cause
Mule sterility cause
63 chromosomes can't pair correctly during meiosis
