natural selection unit Flashcards
DNA
Is a genetic materiel that determines inherited characteristics .
Necleotide
It consists of a sugar, a phosphate, and a base.
Chargaff,s rules
Chargaff found that the amount of adenine in DNA always equals the amount of thymine.
Watson and Crick
They were trying to solve the mysteries of DNA.
Franklin
He used an x-ray to help reveal the structure of DNA.
Mutation
A change in the Nucleotide-base sequence of a gene or DNA molecule.
Adaptation
A characteristic that improves an individuals ability to survive and reproduce in a particular environment.
Species
A group of organisms that are closely related and can mate to produce fertile offspring.
evolution
The process in Which inherited characteristics within a population change over generations such that new species sometimes arise.
Fossils
The remains of physical evidence of a organism.
Fossil record
A historical sequence of life indicated by fossils.
Darwin
He sailed around the world in a ship wanting to understand the natural world.
trait
A genetically determined characteristic.
Selective Breeding
The human practice of breeding animals or plants that have certain desired characteristic.
Natural selection
When individuals that are adapted to there environment are more likely to survive and reproduce more successfully.
Generation Time
The period between the birth or one generation and the birth of the next generation.
speciation
The formation of new species as result of evolution.
Hominid
A primate of a family.
Homo Sapiens
Is the binomial nomenclature for the only extant human species.
Primates
Any member of the group of animals, that includes humans.
