Week 2 - Evolutionary Flashcards
What is creationism?
The belief that God had created different species as they appear today and that each species was immutable, with unchangeable and fixed characteristics
What is Darwins evolutionary theory?
Proposes that species can change over time and that new species come from pre-existing species
Can environmental pressures threaten the survival of species?
Yes it can.
What are examples of environmental pressures that can threaten the survival of species?
New predators - difficulty accessing resources
Climate/Environmental changes - limit the availability of resources
What is natural selection?
A process where organisms evolve and adapt to the environment by means of selective reproduction
Is natural selection random?
No
Will the genetic makeup of the next generation be the same?
No, it will be different because only the best genes will be passed on to the next generation
T/F. Evaluation is an adaptation to the environment.
True
Is evaluation a force that pushes species towards increasing levels of complexity and refinement?
No it is not
What does ‘atavistics’ mean?
Recurrence in an organism of a trait or character typical of an ancestral form and usually due to genetic e.g pointed canine teeth to tear things apart
What is Cesare Lombroso’s Theory?
Draws on the idea that criminals are a subspecies ‘homo delinquents’ who had failed to become civilised like homosapiens which explains criminal behaviour
Who introduced the idea of ‘Hereditary units’ - which is now known as genes?
Gregor Mendel
T/F. Genes contain the genetic code to make the trait we see in people e.g eye colour, skin colour ect
True
How many strands of DNA does one cell contain?
46
One single stands is made up of millions of…
Nucleotides