Evolution Flashcards
It refers to a change in characteristics of population of organisms over time
Evolution
It will continue as long as organisms are born, die, and compete for resources they need to survive
Evolution
Evidences of Evolution
- Fossil Records
- Comparative Anatomy
- Embryonic Development
- Genetic Information
These are preserved remains of an organism. The most common are bones, seeds, shells, and pollen grains.
Fossil
This is the process wherein scientists use fossils to reconstruct the complete structure of the organisms.
Fossil Reconstruction
This is a type of fossil wherein minerals in mud and sand replace the hard parts of an organism
Petrified Fossil
This type of fossil is formed when soft, thin body structures leave impressions on soft sediment such as mud
Imprints
This type of fossil is formed when an organism is buried by sediments then later harden into rock
Molds and Casts
This type of fossil is considered as marks or evidence of animal activities
Trace Fossils
This type of fossil is formed when it is
preserved in sedimentary rock and is formed with more organic material most commonly in environments where fine sediment is deposited
Compression
It states that in a series of sedimentary rock layers, the younger rocks normally lie on top of older rocks
Law of Superposition
According to law of superposition, life moved from one environment to another. What are the environment involved?
Life moved from an aquatic environment to terrestrial one
This is used to determine the absolute age of rocks and fossils by examining the elements they contain
Radioactive Dating
This is the interval of time required for one-half of the atomic nuclei of a radioactive sample to decay
Half-life
It is a radioactive isotope that is commonly used to date the remains of living things
Carbon-14
What is the half-life of a carbon-14?
5730 years
It is a process wherein the age of rock is compared to the other rock layer
Relative Dating
This involves the study of the similarities and differences in the structures of different species.
Comparative Anatomy
It refers to the body parts of an organisms that may perform different functions but of the same origin.
Homologous Structure
Species grew from the same ancestor
Divergent Evolution
It refers to body parts of an organism that may perform the same function but of
different origin.
Analogous Structure
It refers to the evolution in different lineages of structures that are similar or ‘analogous’, but that cannot be attributed to the existence of a common ancestor; in other words, the fact that the structures are analogous does not reflect homology.
Convergent Evolution
These are organs which are developed in an organism but seems to have no particular function on it.
Vestigial Organs
It refers to the portion of the life cycle that begins just after fertilization and continues through the formation of body structures, such as tissues and organs.
Embryonic Development
It refers to the similarity of their DNA sequence as basis in producing
amino acids
Biochemical Analysis
