Evolution (start - biogeographical evidence) Flashcards
Fossils are signs of
Life in our planet and proof existence of ancient species
A biological species is a group of
Organisms that can reproduce sexually and generate fertile descendants
The scientific model states that: ….
Species may vary over time, they are not fixed or unchanging. Any species are a transformation of species that lived in the past.
When species are closer on a phylogenetic tree…
The closer their common ancestor they will be
Homologous structures are…
Traits shared between species (homologies)
There are …. types of homologies
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Homologous organs …. but serve ……
Homologous organs share structure but serve different functions. Ex. Humerus, radius, carpal bones.
Analogy organs are…
Organs that serve the same function and have different structure.
Vestigial traits are ….
the retention of genetically determined structures that have lost their ancestral function.
Embryonic homologies are shared in…
Embryonic homologies are only shared during embryonic development
Cellular and molecular homologies is the similarity of …… between species
Cellular structures, proteins and genes
The more similar the cellular homology is…
The more similar the specie will be related
Biogeographical evidence states….
the distribution of species based on its transformation of past species.
In archpelagos, there are many….
diversities of species of a particular group
Species in archpelagos have common….
homologies that share with other species on nearest countries.
