A report on Panmixia

Pantala flavescens is considered as a global panmictic population.

Panmixia (or panmixis) means random mating.

- Panmixia
Pantala flavescens is considered as a global panmictic population.

7 related topics with Alpha

Overall

In sympatric speciation, reproductive isolation evolves within a population without the aid of geographic barriers.

Sympatric speciation

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Evolution of a new species from a surviving ancestral species while both continue to inhabit the same geographic region.

Evolution of a new species from a surviving ancestral species while both continue to inhabit the same geographic region.

In sympatric speciation, reproductive isolation evolves within a population without the aid of geographic barriers.

Although panmictic, the molecular phylogenetics using nuclear introns revealed staggering diversification of population.

Monostroma

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Genus of marine green algae in the family Monostromataceae.

Genus of marine green algae in the family Monostromataceae.

Currently accepted taxonomy of Monostromatic Green Algae
Seaweed farmer
Soup made using edible Monostroma, common in Okinawan cuisine

Largest phylogeographic assessment of this genus yet conducted in SW Japan revealed existence of sympatric speciation in a panmictic population; the first report of sympatric speciation in algae

Blue-tailed damselflies (Ischnura elegans) mating

Mating

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Pairing of either opposite-sex or hermaphroditic organisms for the purposes of sexual reproduction.

Pairing of either opposite-sex or hermaphroditic organisms for the purposes of sexual reproduction.

Blue-tailed damselflies (Ischnura elegans) mating
Macaque monkeys mating
Gray wolves mating
Lions mating
Hermaphroditic snails (Cornu aspersum) mating
African spurred tortoises (Centrochelys sulcata) mating
Chalkhill blue butterflies (Lysandra coridon) mating
Hoverflies (Simosyrphus grandicornis) mating in midair
Poplar hawk-moths (Laothoe populi) mating
Ladybugs mating
Spittlebugs (Aphrophora alni) mating
thumb|Dogs mating
thumb|Goats mating

For animals, mating strategies include random mating, disassortative mating, assortative mating, or a mating pool.

Hardy–Weinberg proportions for two alleles: the horizontal axis shows the two allele frequencies p and q and the vertical axis shows the expected genotype frequencies. Each line shows one of the three possible genotypes.

Hardy–Weinberg principle

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In population genetics, the Hardy–Weinberg principle, also known as the Hardy–Weinberg equilibrium, model, theorem, or law, states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences.

In population genetics, the Hardy–Weinberg principle, also known as the Hardy–Weinberg equilibrium, model, theorem, or law, states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences.

Hardy–Weinberg proportions for two alleles: the horizontal axis shows the two allele frequencies p and q and the vertical axis shows the expected genotype frequencies. Each line shows one of the three possible genotypes.
Punnett square for three-allele case (left) and four-allele case (right). White areas are homozygotes. Colored areas are heterozygotes.
A de Finetti diagram representing a distribution of genotype frequencies

Random mating. The HWP states the population will have the given genotypic frequencies (called Hardy–Weinberg proportions) after a single generation of random mating within the population. When the random mating assumption is violated, the population will not have Hardy–Weinberg proportions. A common cause of non-random mating is inbreeding, which causes an increase in homozygosity for all genes.

The distribution of world population in 1994

Population

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Population typically refers to the number of people in a single area, whether it be a city or town, region, country, continent, or the world.

Population typically refers to the number of people in a single area, whether it be a city or town, region, country, continent, or the world.

The distribution of world population in 1994
Key
The years taken for every billion people to be added to the world's population, and the years that population was reached (with future estimates).
PRB 2017 Data Sheet Largest Populations

This failure of panmixia leads to two important changes in overall population structure: (1) the component gamodemes vary (through gamete sampling) in their allele frequencies when compared with each other and with the theoretical panmictic original (this is known as dispersion, and its details can be estimated using expansion of an appropriate binomial equation); and (2) the level of homozygosity rises in the entire collection of gamodemes.

Amegilla dawsoni

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Species of bee that nests by the thousands in arid claypans in Western Australia.

Species of bee that nests by the thousands in arid claypans in Western Australia.

This resource pressure has been implicated in forcing the bees to be panmictic.

Pantala flavescens

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Wide-ranging dragonfly of the family Libellulidae.

Wide-ranging dragonfly of the family Libellulidae.

Exuviae
Pantala hymenaea; note the brown basal fleck in the hindwing
Mating in Bhuvanagiri, Telangana
Pantala flavescens wandering behaviour
An aggregation of dragonflies during migration

Another study concluded that Pantala flavescens is a near global panmictic population.