natural selection Flashcards
a molecule that is present in all living cells and that contains that information that determines the traits that a living thing inherits and needs to live
DNA
in a nucleic acid chain a subunit that consists of a sugar a phosphte and a nitrogenous base
necelotide
a=t g=c so for every a theres a t and for every g there is a c
Chargaff’s Rules
James D. Watson and Francis H.C. Crick announce that they have determined the double-helix structure of DNA, the molecule containing human genes. Though DNA–short for deoxyribonucleic acid
Watson and Crick
Rosalind Elsie Franklin was an English chemist and X-ray crystallographer who made contributions to the understanding of the molecular structures of DNA, RNA, viruses, coal, and graphite
Rosalind Franklin
In biology, a mutation is the permanent alteration of the nucleotide sequence of the genome of an organism, virus, or extrachromosomal DNA or other genetic elements
Mutations
any alteration in the structure or function of an organism or any of its parts that results from natural selection and by which the organism becomes better fitted to survive and multiply in its environment.
Adaptation
a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding. The species is the principal natural taxonomic unit, ranking below a genus and denoted by a Latin binomial, e.g., Homo sapiens
Species
Evolution is change in the heritable characteristics of biological populations over successive generations. Evolutionary processes give rise to biodiversity at every level of biological organisation, including the levels of species, individual organisms, and molecules.
Evolution
the remaining bones of a dead animal
Fossils
A term used by paleontologists ( see paleontology ) to refer to the total number of fossils that have been discovered, as well as to the information derived from them. ( See evolution of Earth.) … The first group consists of the facts of palæontology, or the fossil record of past animal life.
Fossil Record
Charles Darwin (1809–1882) and others, stating that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual’s ability to compete, survive, and reproduce.
Charles Darwin
a trait or character is a feature of an organism.
Trait
The intentional breeding of organisms with desirable trait in an attempt to produce offspring with similar desirable characteristics or with improved traits. Supplement. It involves breeding techniques such as inbreeding, linebreeding and outcrossing.
Selective Breeding
The process in nature by which, according to Darwin’s theory of evolution, only the organisms best adapted to their environment tend to survive and transmit their genetic characters in increasing numbers to succeeding generations while those less adapted tend to be eliminated.
Natural Selection
