What's the difference between polygeny and polygyny?
Polygeny
Definition:
(n.) The theory that living organisms originate in cells or embryos of different kinds, instead of coming from a single cell; -- opposed to monogenesis.
Example Sentences:
(1) Study results are organized into 2 parts-the first part dealing with live births, stillbirths, fertility, maternal age and age-parity analysis, and the second part presenting findings on social factors such as birth interval, illegitimate births, adoption, widowhood, polygeny and divorce.
(2) This is in contrast to the formal genetic model of additive polygeny (HOLT).
(3) Polygenis bohlsi jordani (Costa Lima, 1937) (Siphonaptera) is for the first time recorded as ectoparasite on wild rodents captured in the "cerrado" area of Central Brazil.
(4) Tiamastus callens and Polygenis platensis cisandinus are new for this country; Tetrapsyllus maulinus sp.
(5) The most frequent species of mammal was Proechimys dimidiatus (Gunther, 1877); Gigantolaelaps oudemansi Fonseca, 1939 and Polygenis lakoi Guimarães, 1948 were the predominant species of acari and fleas, respectively.
Polygyny
Definition:
(n.) The state or practice of having several wives at the same time; marriage to several wives.
Example Sentences:
(1) The custom of polygyny practised by these people enabled the analysis of associations between full-siblings and half-siblings.
(2) The hypothesis that polygyny is associated with higher fertility than monogamy was evaluated.
(3) Polygyny is common and men control most of the resources.
(4) The hypothesis that the centrosome is maternally inherited was tested during parthenogenesis, polyspermy, and polygyny as well as after recovery from microtubule inhibition at first mitosis.
(5) The high frequency of polygyny in Texas indicates that the fire ant problem in the state is much greater than previously realized.
(6) Male mammals show a diverse array of mating bonds, including obligate monogamy, unimale and group polygyny and promiscuity.
(7) Traditional attitudes towards marriage and sexuality affect urban behavior in the extent of marital stability, the frequency of polygyny, and the emotional bond between spouses.
(8) The frequency of polygyny varied somewhat with geographic region, but the pattern was generally unrelated to habitat and environmental conditions.
(9) These results suggest that the expansion of the cerebral cortex in anthropoids may be associated with terrestriality and polygyny.
(10) The postindependence marriage codes have attempted to give young women more say in choosing a husband, to regulate the practice of bride price, and to limit the practice of polygyny.
(11) Further, the structure of agricultural development has resulted in changes in women's participation in agriculture and polygyny rates, which have had impacts on birth rates.
(12) Polygyny was discovered at 54% of the infested sites.
(13) However, in Nigeria polygyny cannot wholly explain length of postpartum taboo following child birth on the ground that competition among cowives to out do one another in child-bearing results in a tendency of higher fertility and hence shorter postpartum taboo in polygynous households than that in monogamous families.
(14) Data were collected on age, age at marriage, menopause, monogamy or polygyny, total number of children born, number of miscarriages, number of stillbirths, number of children currently living, and contraception.
(15) The hypothesis was judged to be useless because 1) fertility rates are the product of multiple influences; 2) it is too difficult to separate out these multiple influences, given the variability involved in polygynous practices and the inadequates of the data; and 3) the influence of polygyny on fertility is too slight to take into account.
(16) Hence, the tendency for women in polygynous households to adhere more strictly to rules and taboos relating to postpartum abstinence could be associated to the changing roles of women as they affect their responsibility with respect to the maintenance and training of their children rather than to the institution of polygyny per se.
(17) Although the pharaoh's ant offers relatively good possibilities for the selection of resistance on account of the polygyny, the duration of generations in the range of a whole year under field conditions and the isogeny of the colonies diminished the development of resistance.
(18) Factors of the material environment (availability of water and electricity in the residence), size of a household and number of wage earners in it are pervasive and suggest a polarity between archaic elements in the society (low material comfort, polygyny, absence of contraception) and the more forward looking (monogamy, tertiary occupations).
(19) These include the male's greater aggressiveness, the preponderance of polygyny over polyandry, and differences in the antecedents of jealousy.
(20) polyspermy, polygyny, asynchrony between male and female pronucleus development, and preactivation of cytokinesis.