What types of conditions may lead to adaptive radiation?

Adaptive radiations can be triggered by extrinsic factors such as the arise of new ecological opportunity via emergence of novel environments, and/or by intrinsic factors (‘key adaptive innovations’) that increase the availability of niches to a diversifying lineage [1–3, 7, 9].

According to the naturalists of the first half of this century, adaptive radiation is the outcome of three ecological processes: phenotypic differentiation of populations by resource-based divergent natural-selection, phenotypic differentiation through resource-competition(ecological opportunity and divergent character …

The occurrence of the phenomena of adaptive radiation is the result of Natural selection, artificial selection, sexual selection, mutation pressure, genetic drift, or migration. It indicates evolutionary variations that are quite adaptive to a specific environment.

10) defined adaptive radiation as “the evolution of ecological diversity in a rapidly multiplying lineage” and provided four criteria to determine whether a lineage underwent an adaptive radiation: Common ancestry, phenotype-environmental correlation, trait utility, and rapid speciation.

Adaptive radiation leads to Speciation And is only used to describe living organisms. Adaptive radiation can be opportunistic or forced through changes to natural habitats.

In fact, many classic examples of adaptive radiations involve islands or lakes; notable examples include Darwin’s finches of the Galapagos, honeycreeper birds and silversword plants of Hawaii, and cichlid fish of lakes Malawi and Victoria in Africa.

Adaptive Radiation. –The evolution of many diverse species from a common ancestor. Adaptations. -allow them to fill new habitats or roles in their communities.

Adaptive radiation. The development of many different forms from an originally homogeneous group of organisms as they fill different ecological niches. Darwin’s finches.

Common ancestry Is the most important pre-condition for adaptive radiation.

The encounter of a population to multiple of new or newly formed ecological niches is followed by diversification of ancestral line into different forms which in turn occupy a diverse ecological niche. The process is referred to as adaptive radiation. Thus, the correct answer is option C.

Adaptive radiation is a process in which organisms diversify rapidly into a multitude of new forms, particularly when a change in the environment makes new resources available, Creates new challenges and opens environmental niches.

What are some key aspects of an adaptive radiation? The ancestors represent one or a small number of species. The descendants represent many species. The descendants make their living in a wide variety of ways.

Answer and Explanation: Two extinction risks that result due to the exotic pet trade is Over harvesting and exotic species introduction.

Natural selection. The process by which organisms best adapted to their environment survive & reproduce to pass on favorable traits to their offspring. offspring.

Here we show that in arguably the most evolutionarily successful clade of Mesozoic mammals, the Multituberculata, an adaptive radiation began At least 20 million years before the extinction of non-avian dinosaurs And continued across the Cretaceous-Paleogene boundary.

The process in which many new species evolve in a short period of time to fill available niches Is called adaptive radiation. At the end of this period of rapid evolution, the life forms do not look much like the ones that were around before the mass extinction. One example came after the extinction of the dinosaurs.

What is least likely to be a factor that increases the probability of speciation by adaptive radiation? Genetic drift in a population increases. What do scientists focus on to distinguish between species?

In evolutionary biology, adaptive radiation is a process in which Organisms diversify rapidly from an ancestral species into a multitude of new forms, particularly when a change in the environment makes new resources available, alters biotic interactions or opens new environmental niches.

Natural selection requires Heritable variation in a given trait, and differential survival and reproduction associated with possession of that trait.

The process in which many new species evolve in a short period of time to fill available niches is called adaptiveradiation. At the end of this period of rapid evolution, the life forms do not look much like the ones that were around before the mass extinction. One example came after the extinction of the dinosaurs.