Evolutionary Novelties And Adaptations Flashcards
What is allopatric?
Species form while geographically isolated from its parents population
‘Allo parent, goodbye
What is sympatric?
Speciation occurs without geographic separation
Sympatric = same place
What is an adaptive radiation?
New enviornmental opportunist occur and adaptations occur due to ths. New niches form
Radiate change
Punctuated equlibrian
A new species suddenly changes then stays pretty much the same
Punching someone really fast then they dont move for ages
What is hetrochrony?
Hint: development
Change in timing from zygote to maturity between two populations
Timing of particular genes being expressed DURING development
Hetro = different
What does allometric growth mean?
Think metric maths
The proportion of phenotypic structure that change due to different growth rates IN RELATION TO THE ENTIRE ORGANISM
Metric of proportions and stuff
What is a homeotic gene
It determines basic features that will be on the organisms
Eg where the leg is on a bird and the wings
Think homeotic basic features
What is a hox gene
A homeotic gene that controls the body plan in the embryo
Think hox embryo
What is exaptation?
Adaptations that were originally created for one thing but then evolve in the context to be used for something else.
Eg birds with feathers nowadays help them fly, however in dinosoar ages it wasnt for flight.
