Ad
related to: polymorphic threats examples animals species evolution activity kids can give- K-8 Science Lessons
Used in over 30,000 schools.
Loved by teachers and students.
- Grades 3-5 Science Videos
Get instant access to hours of fun
standards-based 3-5 videos & more.
- DIY Science Activities
Do-It-Yourself activities for kids.
Using common classroom materials.
- Grades K-2 Science Videos
Get instant access to hours of fun
standards-based K-2 videos & more.
- K-8 Standards Alignment
Videos & lessons cover most
of the standards for every state
- Teachers Try it Free
Get 30 days access for free.
No credit card or commitment needed
- K-8 Science Lessons
Search results
Results From The WOW.Com Content Network
The hoverfly species mimicking bumblebees are generally accurate mimics, and many of their species are polymorphic. Many of the polymorphisms are different between the sexes, for example by the mimicry being limited to one sex only. The question is, how can the differences between social wasp mimics and bumblebee mimics be explained?
[3]: 126 The most common example is sexual dimorphism, which occurs in many organisms. Other examples are mimetic forms of butterflies (see mimicry), and human hemoglobin and blood types. According to the theory of evolution, polymorphism results from evolutionary processes, as does any aspect of a species.
Mimicry: Many species have the trait known as mimicry which allows normally harmless creatures to appear dangerous. Harmless hoverflies are an example of a species that exhibits mimicry. Hoverflies mimic the look and sound of wasps. Though most of them resemble the wasps very closely, others barely pass as looking like the wasps.
A gene is said to be polymorphic if more than one allele occupies that gene's locus within a population. [1] In addition to having more than one allele at a specific locus, each allele must also occur in the population at a rate of at least 1% to generally be considered polymorphic. [2] Gene polymorphisms can occur in any region of the genome.
Frequency-dependent selection can lead to polymorphic equilibria, which result from interactions among genotypes within species, in the same way that multi-species equilibria require interactions between species in competition (e.g. where α ij parameters in Lotka-Volterra competition equations are non-zero).
Convergent evolution—the repeated evolution of similar traits in multiple lineages which all ancestrally lack the trait—is rife in nature, as illustrated by the examples below. The ultimate cause of convergence is usually a similar evolutionary biome , as similar environments will select for similar traits in any species occupying the same ...
For example, in the hawk dove game we can look for whether there is a static population mix condition where the fitness of doves will be exactly the same as fitness of hawks (therefore both having equivalent growth rates – a static point). Let the chance of meeting a hawk=p so therefore the chance of meeting a dove is (1-p)
A slightly different form of bottleneck can occur if a small group becomes reproductively (e.g., geographically) separated from the main population, such as through a founder event, e.g., if a few members of a species successfully colonize a new isolated island, or from small captive breeding programs such as animals at a zoo.