Flashcards in Chapter 1.5 Deck (5)
What are the closest primate relative to homo-sapiens?
Chimpanzee - only 1.6% difference in DNA structure compared to humans
What are Vestigial Organs?
Remnants of organs that apparently were better developed and more functional in the ancestors of a species. They now serve little or no purpose.
Ex: Piloerector muscle (hair follicle muscles) - humans are no longer covered in hair for warmth
What is Bipedalism?
Standing and walking on 2 legs. This helps spot predators, carry food or infants.
What are so adaptations for bipedalism?
- skeletal and muscular modifications
- increased brain volume
- family life and social changes