Hominins & Human Evolution Flashcards
What are the seven characteristics of a Homo sapiens?
- Bipedal
- Unique Body Shape
- Large Brain
- Use of Tools
- Highly Social
- Use of Symbols
- Change the World
About how old are Homo sapiens as a species?
How do historians know this?
About/at least 315,000 years old.
Bones of a Homo sapiens that lived 315,000 years ago were discovered in Morocco.
Where did Homo sapiens originate a species?
How do historians know this?
Africa.
All of the oldest Homo sapiens bones have been found in Africa.
Which five of the following species are direct ancestors of Homo sapiens?
Sahlenanthropus tchadensis
Ardipithecus ramidus
Australopithecus afarensis
Australopithecus africanus
Homo habilis
Homo erectus
Homo ergaster
Homo antecessor
Homo neanderthalensis
Homo naledi
Homo bodoensis
Homo denisova
Sahlenanthropus tchadensis
Australopithecus afarensis
Australopithecus africanus
Homo ergaster
Homo bodoensis
What can happen to a child when DNA is incorrectly copied into it?
It will develop a random DNA mutation and new trait will appear in the child.
6.) What three things make a species better fit for their environment?
1.) Better able to find food
2.) Better able to avoid predators
3.) Better able to resist disease
What tends to happen to traits when they make individuals of a species better fit for its environment?
Over several generations, those traits will spread from that individual into the population of that species.
Another name for a species of human is a …
hominin
True or False - Evolutionary changes always result in a species evolving into another species.
False - Sometimes evolution can change the traits of a species just a little so that there is a variety of traits among a species. (For example, the peppered moth)
What often causes a species to begin evolving?
A change in their environment
