FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1987389502> ?p ?o ?g. }

• W1987389502 endingPage "238" @default.
• W1987389502 startingPage "226" @default.
• W1987389502 abstract "The timing of insemination relative to ovulation and the frequency of insemination appear prominently in analyses of variations in human secondary sex ratios. Explanations invoking these variables are shown to be inadequate. A new synthetic model of sex determination is proposed in which the sex of offspring is powerfully determined by the state of the cervical mucus. The cervical state is then shown to be a function of hormonal factors endogenous to the female in interaction with the effects of previous inseminations.Increased production of estrogen estradiol tends to increase the penetrability of cervical mucus over the six or so days before ovulation. The increased production of progesterone by the corpus luteum after ovulation quickly reduces the penetrability of cervical mucus. Earlier inseminations also reduce the penetrability of cervical mucus by littering the passages through the mucus with as many as several hundred million stranded sex cells, maternally generated leukocytes, and other debris. Thus, while infrequent sexual intercourse and reduced intercourse rates in the late follicular phase increase mucus penetrability up to ovulation, frequent intercourse and an increased intercourse rate may work against any hormonally-induced improvement in the mucus. Y-bearing spermatozoa are better able to pass through the cervical os, so the sex ratio at conception is positively associated with the coital rate and does not change with time of successful insemination when coital rates are high. On the other hand, when coital rates fall or intercourse takes place once every 7-8 days (e.g., rhythm method), the sex ratio at conception does change with the time of successful insemination. The interaction of coital rate and female hormonal levels regulates the state of the cervical mucus, which, in turn, is a key proximate determinant of the sex ratio at conception. Other proximate determinants include differences in the sizes and motilities of X and Y spermatozoa. The mean proportions of Y spermatozoa in the semen are 46-47%, with much individual variation around the means. In conclusion, the state of the cervical mucus and its dependence on female hormones and coital rate explain why the sex ratios at birth vary with the time of successful insemination in cases of low coital rates. This association does not exist, however, when coital rates are high or increasing." @default.
• W1987389502 created "2016-06-24" @default.
• W1987389502 creator A5037220207 @default.
• W1987389502 date "1995-09-01" @default.
• W1987389502 modified "2023-09-23" @default.
• W1987389502 title "Hormonal and behavioral determinants of the secondary sex ratio" @default.
• W1987389502 cites W1933431767 @default.
• W1987389502 cites W1968491345 @default.
• W1987389502 cites W1986427483 @default.
• W1987389502 cites W1988473649 @default.
• W1987389502 cites W2001848001 @default.
• W1987389502 cites W2009002125 @default.
• W1987389502 cites W2036269019 @default.
• W1987389502 cites W2050502009 @default.
• W1987389502 cites W2085175112 @default.
• W1987389502 cites W2131816575 @default.
• W1987389502 cites W2137376180 @default.
• W1987389502 cites W2139319122 @default.
• W1987389502 cites W2144017078 @default.
• W1987389502 cites W2175436600 @default.
• W1987389502 cites W2288816144 @default.
• W1987389502 cites W2310044103 @default.
• W1987389502 cites W2408964652 @default.
• W1987389502 cites W2412952078 @default.
• W1987389502 cites W2475227551 @default.
• W1987389502 cites W4233206049 @default.
• W1987389502 doi "https://doi.org/10.1080/19485565.1995.9988903" @default.
• W1987389502 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/8738548" @default.
• W1987389502 hasPublicationYear "1995" @default.
• W1987389502 type Work @default.
• W1987389502 sameAs 1987389502 @default.
• W1987389502 citedByCount "14" @default.
• W1987389502 countsByYear W19873895022013 @default.
• W1987389502 countsByYear W19873895022022 @default.
• W1987389502 crossrefType "journal-article" @default.
• W1987389502 hasAuthorship W1987389502A5037220207 @default.
• W1987389502 hasConcept C121608353 @default.
• W1987389502 hasConcept C126322002 @default.
• W1987389502 hasConcept C134018914 @default.
• W1987389502 hasConcept C143228043 @default.
• W1987389502 hasConcept C16685009 @default.
• W1987389502 hasConcept C187785154 @default.
• W1987389502 hasConcept C18903297 @default.
• W1987389502 hasConcept C1998276 @default.
• W1987389502 hasConcept C2777005246 @default.
• W1987389502 hasConcept C2777164284 @default.
• W1987389502 hasConcept C2777312293 @default.
• W1987389502 hasConcept C2777702977 @default.
• W1987389502 hasConcept C2777740455 @default.
• W1987389502 hasConcept C2778093475 @default.
• W1987389502 hasConcept C2779058012 @default.
• W1987389502 hasConcept C2780202899 @default.
• W1987389502 hasConcept C2781087480 @default.
• W1987389502 hasConcept C2908647359 @default.
• W1987389502 hasConcept C29456083 @default.
• W1987389502 hasConcept C42407357 @default.
• W1987389502 hasConcept C71315377 @default.
• W1987389502 hasConcept C71924100 @default.
• W1987389502 hasConcept C86803240 @default.
• W1987389502 hasConcept C99454951 @default.
• W1987389502 hasConceptScore W1987389502C121608353 @default.
• W1987389502 hasConceptScore W1987389502C126322002 @default.
• W1987389502 hasConceptScore W1987389502C134018914 @default.
• W1987389502 hasConceptScore W1987389502C143228043 @default.
• W1987389502 hasConceptScore W1987389502C16685009 @default.
• W1987389502 hasConceptScore W1987389502C187785154 @default.
• W1987389502 hasConceptScore W1987389502C18903297 @default.
• W1987389502 hasConceptScore W1987389502C1998276 @default.
• W1987389502 hasConceptScore W1987389502C2777005246 @default.
• W1987389502 hasConceptScore W1987389502C2777164284 @default.
• W1987389502 hasConceptScore W1987389502C2777312293 @default.
• W1987389502 hasConceptScore W1987389502C2777702977 @default.
• W1987389502 hasConceptScore W1987389502C2777740455 @default.
• W1987389502 hasConceptScore W1987389502C2778093475 @default.
• W1987389502 hasConceptScore W1987389502C2779058012 @default.
• W1987389502 hasConceptScore W1987389502C2780202899 @default.
• W1987389502 hasConceptScore W1987389502C2781087480 @default.
• W1987389502 hasConceptScore W1987389502C2908647359 @default.
• W1987389502 hasConceptScore W1987389502C29456083 @default.
• W1987389502 hasConceptScore W1987389502C42407357 @default.
• W1987389502 hasConceptScore W1987389502C71315377 @default.
• W1987389502 hasConceptScore W1987389502C71924100 @default.
• W1987389502 hasConceptScore W1987389502C86803240 @default.
• W1987389502 hasConceptScore W1987389502C99454951 @default.
• W1987389502 hasIssue "3-4" @default.
• W1987389502 hasLocation W19873895021 @default.
• W1987389502 hasLocation W19873895022 @default.
• W1987389502 hasOpenAccess W1987389502 @default.
• W1987389502 hasPrimaryLocation W19873895021 @default.
• W1987389502 hasRelatedWork W134526754 @default.
• W1987389502 hasRelatedWork W1566419909 @default.
• W1987389502 hasRelatedWork W1965699720 @default.
• W1987389502 hasRelatedWork W1987389502 @default.
• W1987389502 hasRelatedWork W2001688795 @default.
• W1987389502 hasRelatedWork W2043899786 @default.
• W1987389502 hasRelatedWork W2112207893 @default.
• W1987389502 hasRelatedWork W2142706490 @default.
• W1987389502 hasRelatedWork W2389136855 @default.

• next