Document Detail

Length of the follicular phase, time of insemination, coital rate and the sex of offspring.
MedLine Citation:
PMID:  9130769     Owner:  NLM     Status:  MEDLINE    
The penetrability of cervical mucus improves over the follicular phase. When the length of the follicular phase varies due to variation in the timing of the luteinizing hormone surge, mucus penetrability will also improve as the phase lengthens. As selection for Y spermatozoa decreases with improvements in mucus penetrability, sex ratios at conception should decline in longer follicular phases. Sex ratios should also decline as the time of insemination approaches ovulation unless hormonally-induced improvements in penetrability are reduced by the debris left by earlier inseminations.
J F Martin
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Human reproduction (Oxford, England)     Volume:  12     ISSN:  0268-1161     ISO Abbreviation:  Hum. Reprod.     Publication Date:  1997 Mar 
Date Detail:
Created Date:  1997-07-29     Completed Date:  1997-07-29     Revised Date:  2005-11-16    
Medline Journal Info:
Nlm Unique ID:  8701199     Medline TA:  Hum Reprod     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  611-6     Citation Subset:  IM    
Department of Anthropology, Arizona State University, Tempe 85287-2402, USA.
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MeSH Terms
Cervix Mucus / physiology*
Follicular Phase*
Sex Ratio*
Sperm-Ovum Interactions*
Comment In:
Hum Reprod. 1997 Sep;12(9):2083-5   [PMID:  9363736 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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