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evolution of natural selection - Coggle Diagram
evolution of natural selection
genetic diversity
survival
changing in environmental conditions
if their offspring was born in dessert
then the new born was born in a snowy area
the new born will have adaptations to survive in the winter
human activities
habitat destruction
fragmentation
major threats to genetic diversity
over-harvesting
climate change
loss of genetic diversity
can increase the risk of extinction
not reproducing
reduces the ability of a population to adapt to changing environmental conditions.
DNA
combine the two offsprings together
to form different variations in genetic diversity
genes
genes make chromosomes
Maintaining genetic diversity
long term sustainability
ecosystems
evolution
is a slow process
takes thousands of years to change significant traits in the population
can chnage the evolution of traits
depending on environmental
have to survive to reproduce
mutation
Dependent on chnaging differetn traits over time to have differetn variations of animals or things
genetic drift
can change frequency due to random chance in variation
gene flow
one population to another
variation
traits
different traits develop different features over time
butterflies
over time it developed many different variations of colour
many colours can camoflauge into trees
other colours stand out in the wild
giraffe
over time giraffe neck grow longer and longer
due to offsprings
adaptation
birds
this generation birds beaks are alot smaller in size then 1000 years ago
can be
genetic
pass traits down form off spring
colour
survival
can form traits from ancestors
environmental
due to the area of the child it can have traits that help them survive from predators
Environmental change
seasonal change
reproduction
variation
inheritance
Differential survival and reproduction
Adaptation
Selection pressure
different variation become less popular over time
this depends on
how they enable organisms
reproduce
survive
variation is crucial on the diversity in life
survival
Charles Darwin
he made contributions to the fields
evolutionary biology
natural history
geology
theory of evolution of natural selection
how species evolve over time through the process of adaption
he argued all species of organisms have evolved over time from ancestors
he did this by
finding many fossils and how they looked like 1000 years ago
alot of research
selective pressure
Environmental factors such as
Temperature
food avalibility
predation
adaptation
environmental changes