Science Quiz Notes Flashcards
To see how closely species are related we need to know …
How closely in time they diverged form their common ancestor!
We know that species are related because …
They diverged from a common ancestor!
Although the fossil record is incomplete …
It contains many examples of fossil sequences showing close ancestor relationship !
Homologous structures are …
Body parts of organisms that are similar in structure and position.
Body parts that perform a similar function but differ in structural are …
Analogous structures.
Vestigial parts are…
Body parts that have lost their original function through evolution
Embryology is…
The science of the development of embryos from fertilisation to birth.
Vertebrates are …
Animals with a backbone.
The pharyngeal pouch of vertebrates develops into …
Different neck and face parts in each vertebrate.
