What is the meaning of assortative mating?
Population Genetics Assortative mating is the tendency for people to choose mates who are more similar (positive) or dissimilar (negative) to themselves in phenotype characteristics than would be expected by chance.
Which is an example of assortative mating?
assortative mating, in human genetics, a form of nonrandom mating in which pair bonds are established on the basis of phenotype (observable characteristics). For example, a person may choose a mate according to religious, cultural, or ethnic preferences, professional interests, or physical traits.
What is assortative mating in animals?
Abstract. Assortative mating occurs when there is a correlation (positive or negative) between male and female phenotypes or genotypes across mated pairs.
How does assortative mating occur?
Assortative mating can, at times, arise as a consequence of social competition. Traits in certain individuals may indicate competitive ability which allows them to occupy the best territories. Individuals with similar traits that occupy similar territories are more likely to mate with one another.
What is the importance of assortative mating?
Evolutionary theory predicts that positive assortative mating—the tendency of similar individuals to mate with each other—plays a key role for speciation by generating reproductive isolation between diverging populations.
What statement best describes assortative mating?
What statement best describes assortative mating? Individuals with similar phenotypes are more likely to mate.
What is assortative mating quizlet?
assortative mating. a system of mating individuals that are either similar or dissimilar in their performance or predicted genetic value (mean of offspring does not change)
What is the importance of assortative mating in allopatric speciation?
Importantly, assortative mating not only is involved in sympatric or parapatric speciation but has also been argued to constitute an important mechanism in maintaining reproductive isolation after secondary contact between allopatrically diverged populations via reinforcement (e.g., Kondrashov and Shpak 1998; Noor 1999 …
When males and females of a population look or act differently it is referred to as?
19.2: Population Genetics. Individuals of a population often display different phenotypes, or express different alleles of a particular gene, referred to as polymorphisms.
Which of the following evolutionary forces can introduce new genetic variation into a population?
There are four forces of evolution: mutation, gene flow, genetic drift, and natural selection. Mutation creates new genetic variation in a gene pool.
What is assassortative mating in psychology?
assortative mating. noun Animal Behavior, Psychology. the reproductive pairing of individuals that have more traits in common than would likely be the case if mating were random (contrasted with disassortative mating).
What is the difference between assortative mating and inbreeding?
Some types of assortative mating are also similar to inbreeding in that they do not change allele frequencies but do affect genotype frequencies. On the other hand, negative-assortative mating may result in balancing selection and the maintenance of genetic variation.
What is an example of assortment in psychology?
In (positive) assortative mating, psychologically, behaviorally, or physically similar individuals pair up. Negative assortative, or disassortative, mating occurs as a result of attraction between dissimilar individuals. An example of positive marital assortment is the tendency of deaf persons to marry one another.
Can atypical assortative mating based on body size be detected?
Atypical assortative mating based on body size in an explosive-breeding toad from a tropical island of southern China. Going back to their impressive dataset, the researchers were able to perform analyses that detected assortative mating.
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