Study guide Flashcards
Adaptation
The cumulative changes in species over long periods of time that make the species better able to survive in its environment.
Evolution
The process by which organisms change over time as a result of differences in heritable traits.
Charles Darwin
Charles Darwin Is a naturalist that study’s evolution
Natural selection
The process of certain traits being passed on to the next generation because they allow an individual to better survive and reproduce. Sometimes called “survival of the fittest”.
Variation
The natural differences
between DNA of
individuals in a population
or species.
Mutation
When DNA is not copied
correctly; a mistake happens
which causes a change in the
DNA code.
Population
The amount of species that are currently living
Fossil record
Fossils indicated that Earth must be very old and that organisms were different in the past than they are today
DNA
DNA (or deoxyribonucleic
acid) is a long molecule that
contains unique code for
that organism. Sometimes
called “genes” ● Like a recipe book it holds
the instructions for making
an organism. ● Every living thing has its
own unique DNA code
which is a combination of
their parents DNA.
Structure traits
Unique features that help an animal survive
Development traits
Behavior that helps animals survive in the wilderness
Extinction
No more of a species left
Trait
Something special about a animal
Allele
Building blocks of dna
Dominant
Naturally more common
Resesive
Less dominant
Genotype
Putit square s dominant and resesive
Phenotype
Physical characteristics
Homozygous
Same
Hetrosogous
Different
Punitive square
Shows phenotypes and predicts offsprings
Who is Charles Darwin
Born in England 1809 - Naturalist - Voyaged for 5 years on the HMS
Beagle in 1831 at 22 years old as
their onboard naturalist. - Collected lots of specimens;
fossils and live. - Observations led to his writing
“Origin of Species”. - Book explained his theory of
evolution and natural selection.
What where Darwin’s four observations
Antonymy geography observations
How do you compare dna
Used a punitive square
