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In sociology, heterogamy refers to a marriage between two individuals that differ in a certain criterion, and is contrasted with homogamy for a marriage or union between partners that match according to that criterion. For example, ethnic heterogamy refers to marriages involving individuals of different ethnic groups.
Females possessing one X-linked recessive mutation are considered carriers and will generally not manifest clinical symptoms of the disorder, although differences in X chromosome inactivation can lead to varying degrees of clinical expression in carrier females since some cells will express one X allele and some will express the other. All ...
The Cambridge Dictionary of Sociology is a dictionary of sociological terms published by Cambridge University Press and edited by Bryan S. Turner. There has only been one edition so far. The Board of Editorial Advisors is made up of: Bryan S. Turner, Ira Cohen, Jeff Manza, Gianfranco Poggi, Beth Schneider, Susan Silbey, and Carol Smart. In ...
Homozygous and heterozygous. Zygosity (the noun, zygote, is from the Greek zygotos "yoked," from zygon "yoke") (/ z aɪ ˈ ɡ ɒ s ɪ t i /) is the degree to which both copies of a chromosome or gene have the same genetic sequence. In other words, it is the degree of similarity of the alleles in an organism.
In the XY sex-determination system, the female-provided ovum contributes an X chromosome and the male-provided sperm contributes either an X chromosome or a Y chromosome, resulting in female (XX) or male (XY) offspring, respectively. Hormone levels in the male parent affect the sex ratio of sperm in humans. [25]
This category relates to specifically sociological terms and concepts. Wider societal terms that do not have a specific sociological nature about them should be added to social concepts in keeping with the WikiProject Sociology scope for the subject.
A study on guppies, Poecilia reticulata, revealed that the female preference was sufficient to tightly maintain polymorphism in male traits. [6] This type of mate choice shows that costly preferences can persist at higher frequencies if mate choice is hindered, which would allow the alleles to approach fixation.
A dominant allele can be inherited from a homozygous dominant parent with probability 1, or from a heterozygous parent with probability 0.5. To represent this reasoning in an equation, let A t {\displaystyle \textstyle A_{t}} represent inheritance of a dominant allele from a parent.