Biomaterial Database

Dizygotic twinning, marital stage and status and coital rates. 1981

W H James

An attempt is made to isolate and quantify a positive correlation of parental coital rate with dizygotic twinning probability, by considering the variations of DZ twinning with marital stage and status. It is concluded that if the coital rate of young women is doubled, their DZ twinning probability is increased by a factor of very roughly 25-30%.

UI	MeSH Term	Description	Entries
D007086	Illegitimacy	The state of birth outside of wedlock. It may refer to the offspring or the parents.	Legitimacy,Pregnancy, Premarital,Premarital Pregnancy,Unmarried Fathers,Unmarried Mothers,Father, Unmarried,Fathers, Unmarried,Mother, Unmarried,Mothers, Unmarried,Pregnancies, Premarital,Premarital Pregnancies,Unmarried Father,Unmarried Mother
D008393	Marriage	The social institution involving legal and/or religious sanction whereby individuals are joined together.	Marital Relationship,Arranged Marriage,Commonlaw Marriage,Consensual Union,Consummation of Marriage,Dowry,Husband-Wife Comparisons,Intermarriage,Marriage Age,Marriage Duration,Marriage Patterns,Marriage Postponement,Mate Selection,Multiple Marriages,Nuptiality,Polygamy,Polygyny,Remarriage,Same-Sex Marriage,Age, Marriage,Ages, Marriage,Arranged Marriages,Commonlaw Marriages,Comparison, Husband-Wife,Comparisons, Husband-Wife,Consensual Unions,Dowries,Duration, Marriage,Husband Wife Comparisons,Husband-Wife Comparison,Intermarriages,Marital Relationships,Marriage Ages,Marriage Consummation,Marriage Consummations,Marriage Pattern,Marriage Postponements,Marriage, Arranged,Marriage, Commonlaw,Marriage, Same-Sex,Marriages,Marriages, Arranged,Marriages, Commonlaw,Marriages, Multiple,Marriages, Same-Sex,Mate Selections,Postponement, Marriage,Postponements, Marriage,Relationship, Marital,Relationships, Marital,Remarriages,Same Sex Marriage,Same-Sex Marriages,Selection, Mate,Selections, Mate,Union, Consensual,Unions, Consensual
D011247	Pregnancy	The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.	Gestation,Pregnancies
D011336	Probability	The study of chance processes or the relative frequency characterizing a chance process.	Probabilities
D003075	Coitus	The sexual union of a male and a female, a term used for human only.	Sexual Intercourse,Coital Frequency,First Intercourse,Coital Frequencies,First Intercourses,Frequencies, Coital,Frequency, Coital,Intercourse, First,Intercourse, Sexual,Intercourses, First
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293	Adolescent	A person 13 to 18 years of age.	Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D013480	Superovulation	Occurrence or induction of release of more ova than are normally released at the same time in a given species. The term applies to both animals and humans.	Superovulations