Sympatric Speciation Flashcards
Sympatric speciation doesn’t involve _
Land barriers
In sympatric speciation, _ between species is restricted by factors
Movement of genes
(Gene flow)
Movement of genes is restricted by factors such as (2)
Habitat differentiation
Polyploidy
Habitat differentiation arises when subpopulation starts to exploit a habitat (food source) that
Parents don’t use
Polyploidy, _ wheee some individuals have _
Extra set of chromosomes
Polyploidy, where some Individuals have an extra set of chromosomes, can result in self-fertilization or _
Opportunity to mate with other individuals with extra chromosomes
In just one generation, polyploidy can result in _ without geographic separation
Reproductive isolation
At least one third of plant species probably evolved through _
Polyploidy
Polyploidy common in plants, _ and _
Amphibians
Fish
Cell division “mistakes” lead to multiplication of chromosomes in _
Daughter plants
Multiplication in daughter plants render them incapable of breeding with _ (2)
Parent plants
(Leading to new species)
