Evolution Flashcards
which 2 scientists discovered evolution
Wallace and Darwin
what is natural selection
where the environment selects which individual survives and passes on their genes, this means that organisms that are better suited to survive will pass on their genes
give 3 reasons why the theory of evolution is so important
- it helps us understand the relationships between different organisms
- it explains how species evolved
- it explains how different species adapt to the changes in their environment
what are the 5 species of humans from oldest to present
Ardipithecus ramidus
Australopithecus afarensis
homo habilis
homo erectus
homo sapiens
what happened to brain size as humans evolved
they increased
what is evidence that humans became smarter
stone tools
how can stone tools be dated
you can use the radiation of the sediment just above and below the tool to date the sediment and find when the tools were left there
did humans get taller true or false
true
what are the 2 ways to classify organisms
5 kingdoms
three-domain system
what are the 5 kingdoms
plants
animals
fungi
protists
prokaryotes
what are the 3 domains
Eubacteria
Archaea
Eukaryota
what limb structure do most living things share
pentadactyl limb
what is selective breeding
is when plants or animals with certain desirable characteristics are bred together so that the offspring will produce the desired characteristics as well
what are 5 reasons organisms are selectively bred for
disease resistance
increased yield
increased ability to cope with difficult conditions
faster growth
better flavour
what is a disadvantage of selective breeding
may cause organisms to suffer
