(v. i.) To unite in sexual intercourse; to come together in the act of generation.
Example Sentences:
(1) Using allozymes as the genetic probe, data are presented which show that wild Drosophila buzzatii females and males engaged in copulation mate at random.
(2) The inhibition is desappears if placed under copulation conditions during a full cycle.
(3) Circular cuts which surgically isolated the medial basal hypothalamus (MBH) from the remainder of the brain did not prevent copulation 4 to 24 h later, but did block reflex ovulation.
(4) Eight rats of the PCPA group and only two of the vehicle, started to copulate.
(5) Incubation of normal pig lymphocytes in serum samples collected from 10 sows immediately before, and at daily intervals after mating with a vasectomized boar significantly elevated the rosette inhibition titre (RIT) of a standard antilymphocyte serum in 6 animals on the first but not on the 2nd and 3rd day after copulation.
(6) Duration of copulation in mixed combinations of D. athabasca is determined by the male.
(7) In Rhodotorula, peroxisomes are characterized by the same "bean" configuration and paired arrangement imitating "copulation" as mitocondria.
(8) On average, copulation lasted 27.2 s and was completed in flight.
(9) The surface membrane enzyme activity disappears from the zygote shortly after copulation and at the same time lysosome-like bodies start to appear in the cytoplasm.
(10) There was no seasonal fluctuation in copulative activity.
(11) Since courtship song increases a females' receptivity to copulation, the frequency of mating within a short observation period was used as a measure of the ability of mutant females to distinguish between singing males and males that were unable to sing.
(12) Copulations with other adults males also occurred during all cycle phases, but were most frequent peri-ovulatory.
(13) Copulation occurred more often on the occasion of the first attempt by the male.
(14) In the second experiment, intact females copulated twice with a male: once when they were able to hear and once when they were temporarily deafened with a medical ear mold.
(15) The gene products are secreted into the male duct and transferred to the female copulant during copulation.
(16) Pregnant C3H mice were exposed to teratogenic doses of cyclophosphamide (CPA), on the 11th day after copulation.
(17) Thiazide-type diuretics also produce erectile dysfunction in rats and interfere with normal copulation.
(18) Morphine administered rats showed a loss of weight, hypertrophy of the adrenals, decreased weight of accessory sex organs, low sperm count, and decreased copulation rate.
(19) La Crosse virus was detected in the bursa of females after induced copulation, and disseminated infection was shown to occur occasionally.
(20) Mangabeys spend 47% of activity observations feeding, 27% moving, and the remainder of the activity observations is accounted for by grooming, playing, vocalizing, copulating, etc.
Polyandry
Definition:
(n.) The possession by a woman of more than one husband at the same time; -- contrasted with monandry.
Example Sentences:
(1) A 'low recurrence polyandry' is observed in the sperm dimorphic species D. affinis while a 'high recurrence polyandry' is observed in the sperm monomorphic species D. latifasciaeformis and D. littoralis.
(2) Type II is female-headed and daughters bring children into the household by de facto polyandry (41%), but sons formally weds monogamously.
(3) Mark you, I think you probably need plenty of money for polyandry.
(4) The results imply that tolerance by the national government of polyandry within certain minority groups (e.g.
(5) Type I households have as head a women whose husband either visits or lives with her but is not legally bound to her; it is de facto polyandry (26.7% of survey households).
(6) National government should practice tolerance of polyandry as an acid to the attainment of zero population growth.
(7) The phenomenon is not correlated with an unusually large degree of male parental investment, polyandry, greater aggressiveness in females than in males, greater development of weapons in females, female dominance, or matriarchy.
(8) The concern is that the nonHan might raise the national birth rate and reduce the proportion of Han, even though nonHan life expectancy is lower and there is practice of polyandry.
(9) The general practice of polyandry is described as a walking marriage where women control material resources.
(10) Discussion is provided on the polyandry found among villagers of Limi in the Highlands of Nepal and the Tre-ba of Central Tibet, where there is fraternal polyandry patriarchies, where fertility rates of these unions were not higher, and a sizeable fraction of women 20-49 were left without mates (31% in Limi and 29% in Dhinga).
(11) These include the male's greater aggressiveness, the preponderance of polygyny over polyandry, and differences in the antecedents of jealousy.
(12) Males in the three species are equally polygynous but females differ in the level of polyandry.
(13) The results indicate that polyandry, by a large number of males, is not a common phenomenon in M. rotundata bee species.
(14) 'obligatory' polyandry) should only result in sperm monomorphism irrespective of the absolute value of sperm length.
(15) The Musuo have practiced matrilineal polyandry since the Yuan dynasty (1271-1368 AD).
(16) Field studies of callitrichid species have reported a surprising degree of variation in the composition of social groups, some of which has been interpreted as evidence of 'cooperative polyandry' in recent reviews.
(17) Female mating bonds include long-term monogamy, serial monogamy, polyandry and promiscuity.
(18) Since reactivity to syphilis was associated with poverty, poor hygiene, polyandry, polygamy, and illiteracy, citizens living in Himachal Pradesh were at great risk of acquiring HIV from a foreigner.
(19) In Kerala state, India and among the Kandyan Sinhalese of Sri Lanka, polyandry may not increase the fertility of individual wives, and is economically resourceful.