Natural selection Flashcards
A molecule that is present in all living cells and that contains the information that determines the traits that living thing inherits and needs to live.
DNA
In a nucleic-acid chain, a subunit that consists of a sugar, a phosphate, and a nitrogenous base.
Nucleotide
The amount of adenine in DNA always equals the amount of thymine.
Chargaff’s Rules
They concluded that DNA must look like a long, twisted ladder.
Watson and crick
She took images of DNA molecules
Rosalind Frankline
a change in the nucleotide-base sequence of a gene or DNA molecule.
Mutations
a characteristic that improves an individual’s ability to survive and reproduce in a particular environment.
Adaption
a group of organisms that are closely related and can mate to produce fertile offspring.
Species
the process in which inherited characteristics within a population change over generations such that new species sometimes arise.
Evolution
the remains or physical evidence of an organism preserved by geological processes.
Fossils
a historical sequence of life indicated by fossils found in layers of the earths crust
Fossil record
He formed a theory about how evolution happens.
Darwin
a genetically determined characteristic.
Trait
the human practice of breeding animals or plants that have certain desired characteristics.
Selective Breeding
the process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well adapted individuals do; a theory to explain the mechanism of evolution.
Natural selection
