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Evolution and Natural Selection
Terms in this set (27)
any fossilized remains of a life form that exhibits traits common to both an ancestral group and its derived descendant group.
an English naturalist, geologist and biologist, best known for his contributions to the science of evolution.
evidences of evolution
evidence such as fossils and similarities between related living organisms, were used by Darwin to develop his theory of natural selection, and are still used today.
develop gradually, especially from a simple to a more complex form.
a volcanic archipelago in the Pacific Ocean. It's considered one of the world's foremost destinations for wildlife-viewing. Charles Darwin visited in 1835, and his observation of Galápagos' species later inspired his theory of evolution.
homologous (similar) structures
It's when very different animals have bones that appear very similar in form or function and seem to be related.
Theory of evolution
A theory that the various types of animals and plants have their origin in other preexisting types and that the distinguishable differences are due to modifications in successive generations.
an adaptive trait, is a trait with a current functional role in the life of an organism that is maintained and evolved by means of natural selection.
the formation of new and distinct species in the course of evolution.
Organisms that are best adapted to an environment survive and reproduce more than others.
each species produces more offspring that can survive.
each individual has a unique combination of inherited traits. More variation in a species is likely to survive.
individual compete for limited resources: food, water, space, mates.
The individuals with the best traits/adaption will survive and have the opportunity to pass on it's traits to offspring.
Embryology and development
Branch of biology that studies the prenatal development of gametes (sex cells), fertilization, and development of embryos and fetuses.
a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.
a molecule that carries the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses.
the study of similarities and differences in the anatomy of different species. It is closely related to evolutionary biology and phylogeny (the evolution of species).
believed in acquired trait that was certain trait developed by individual will pass down to their offspring.
the total number of genetic characteristics in the genetic makeup of a species. It is distinguished from genetic variability, which describes the tendency of genetic characteristics to vary.
the disguising of military personnel, equipment, and installations by painting or covering them to make them blend in with their surroundings.
a physical characteristic of an organism that is not passed down to offspring genetically. It is not coded in the organism's DNA and is a product of the environment's influence on the organism.
traits that can pass down to the offspring.
In genealogy, any person to whom two or more persons claim descent; also, the most recent ancestral form or species from which two different species evolved.
the changing of the structure of a gene, resulting in a variant form that may be transmitted to subsequent generations, caused by the alteration of single base units in DNA, or the deletion, insertion, or rearrangement of larger sections of genes or chromosomes.
a similarity of one organism, usually an animal, to another that has evolved because the resemblance is selectively favored by the behavior of a shared signal receiver that can respond to both.
An ecological unit composed of a group of organisms or a population of different species occupying a particular area, usually interacting with each other and their environment.
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