Evidence From Genetics Flashcards
why are genetics significant
they are significant because they show differences and resemblances of closely related organisms
how is evidence from genetics seen?
From studying mitochondrial and chromosomal DNA
How did organisms descend from common ancestor
- DNA & RNA
have genes in organisms that code for same protein
Define Homologies
number of shared homologous features between species
Homologous Structure
Similar in fundamental structure but dont perform same functions
Account for Analogous Structure
They are structures that are similar but different in organisms this is because they evolved from similar environment. ( BATS AND INSECTS)
Account for vestigial organs
they organs/ structure that are the same with no specific functions.
( Coccyx tail bone and chimps)
