Life past and present
Laws and Theories
Law
explains what is happening
Theory
Explains why it happens
Natural selection
decent with modification
Theory of Evolution
any change in the heritable traits within a population across generations
Offsprings look & act like their parents due to DNA transfers
DNA is a chemical code in cells
Single celled ameba
Every organism has a common ancestor
Charles Darwin and Alfred Russel Wallace
Complex creatures
Require a partner
Copy of half each person DNA
Copy DNA then split
Creates an offspring
Evidence for evolution
Comparative anatomy
DNA comparison/ molecular biology
Fossil Records
Galapagos islands/biogeography
Comparative Embryology and development
DNA Mutations
Change in the genetic codes of a person
can be advantageous or disadvantageous
passed through generations
Help them survive in their environment
Common ancestry
VASRP
Variation
Adaptation
Survival
Reproduction
Population Change over time
Some characteristics & features are specific to an individual to help the survive
variations between individuals in a population
Some individuals are better adapted to their environment & reproduce
Individuals that survive are able to reproduce with their specific traits
Over many generations, the characteristics of individuals reproduce becoming more common in the population
individuals are born with adaptations they are not developed over their lifetime
Phenotypes
Physical/ observable traits
can change
Genotype
All traits coded for in an organisms DNA
DNA
Deoxyribonucleic Acid
is located in the nucleus of nearly every cells in an organism
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Hereditary material
Biotechnology
stem cells