منابع مشابه
Reproduction without sex: social and ethical implications.
The development of the technique of in vitro fertilization (IVF) helped to make it possible for a couple to reproduce, to have a child, without normal sexual intercourse. Indeed this is the main point of the procedure: for there are many couples, about one in seven, who encounter difficulties in having children through normal sexual intercourse. For them, IVF provides an alternative way of crea...
متن کاملAggressiveness and Reproduction of Four Meloidogyne arenaria Populations on Soybean.
Aggressiveness and reproduction differed among four geographical populations of M. arenaria on six soybean cultivars in field microplots. These differences were consistent over 3 years. The populations did not differ in virulence; i.e., population by cultivar interactions were not significant. Perineal pattern morphology, the North Carolina differential host test, chromosome counts of immature ...
متن کاملReproduction-time statistics and segregation patterns in growing populations.
Pattern formation in microbial colonies of competing strains under purely space-limited population growth has recently attracted considerable research interest. We show that the reproduction time statistics of individuals has a significant impact on the sectoring patterns. Generalizing the standard Eden growth model, we introduce a simple one-parameter family of reproduction time distributions ...
متن کاملContrasting Effects of Climate Change on Rabbit Populations through Reproduction
BACKGROUND Climate change is affecting many physical and biological processes worldwide. Anticipating its effects at the level of populations and species is imperative, especially for organisms of conservation or management concern. Previous studies have focused on estimating future species distributions and extinction probabilities directly from current climatic conditions within their geograp...
متن کاملGenetic analysis of reproduction in the Buryat populations.
A complex anthropological survey based on population-genetic methods and a study of a wide spectrum of genetic systems (43 alleles from 17 independent loci) was undertaken among 450 Buryat women of post-reproductive age. The results obtained showed the influence of particular genetic markers and their complex on the formation of peculiarities in the reproduction structure of the Buryat populati...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Philosophy of Science
سال: 2014
ISSN: 0031-8248,1539-767X
DOI: 10.1086/677203