Some groups of animals, such as birds, produce hybrids much more easily than others. More than 10% produce fertile hybrids, with different penguin species among those which can breed to have healthy ...

Toddlers can name a few animals. Older kids group animals into categories (birds, fish). And teenagers can sketch a rough ...

Isolating Mechanisms: Lacewing Songs: When explaining a breakup, couples will often say, "We grew apart," or "We both changed in different ways." That's a good metaphor for how species are formed ...

Aim Different continental and insular speciation processes are reviewed. The areal and clinal conceptions of speciation studies are discussed. I propose a revisited cline theory reconciling cline ...

Speciation is where populations become extremely varied and they can no longer interbreed to produce fertile offspring. They are classed as different species.

Niche conservatism is the tendency of species to retain ancestral ecological characteristics. The conditions for ecological speciation are more restrictive than for allopatric speciation (Figure 2).

By studying related lineages of insects with different mating systems, researchers were able to assess how the systems affected the rate of speciation within each lineage.

Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence Date: September 30, 2014 Source: American Journal of Botany Summary: Researchers emphasize that ...

Geneticists have identified two genes, one in mice and one in fruitflies, that stop the offspring of different species from reproducing — driving the evolution of new species. A species can be ...

McGill University. "Color Pattern Spurs Speciation In Tropical Fish." ScienceDaily. ScienceDaily, 14 June 2007. <www.sciencedaily.com / releases / 2007 / 06 / 070612142947.htm>.

Daniel J. Funk, Isolating a Role for Natural Selection in Speciation: Host Adaptation and Sexual Isolation in Neochlamisus bebbianae Leaf Beetles, Evolution, Vol. 52, No. 6 (Dec., 1998), pp. 1744-1759 ...