Results 21 to 30 of about 3,416 (257)

Sex reversal in the dageraad Chrysoblephus cristiceps (Pisces: Sparidae)

open access: yesKoedoe: African Protected Area Conservation and Science, 1976
This paper reports protogynous hermaphroditism in the dageraad Chrysoblephus cristiceps. Mass-length relationships indicate growth changes in male and female fish.
G. A. Robinson
doaj   +1 more source

On the Nature of Organs and Organ Systems – A Chapter in the History and Philosophy of Biology

open access: yesFrontiers in Ecology and Evolution, 2021
Contrasting definitions of organs based either on function or on strictly morphological criteria are the legacy of a tradition starting with Aristotle.
Alessandro Minelli
doaj   +1 more source

Terrestrial gastropods - how do they reproduce? [PDF]

open access: yesInvertebrate Survival Journal, 2017
Molluscs are the most diverse group in respect of sexual systems and strategies. They can be dioecious with separate sexes or hermaphroditic. Within hermaphroditism, it is possible to distinguish a number of modifications of this type of reproduction ...
K S Zajac, P E Kramarz
doaj   +1 more source

Are hermaphrodites better adapted to the colonization process in trioecious populations of Salix myrsinifolia?

open access: yesActa Societatis Botanicorum Poloniae, 2015
In trioecious plant populations, the role of hermaphroditism is often uncertain. We investigated the advantages of hermaphroditism in the dioecious shrub Salix myrsinifolia. The sex ratio of 30 S.
Paweł Mirski, Emilia Brzosko
doaj   +1 more source

Dioecy in Flowering Plants: From the First Observations of Prospero Alpini in the XVI Century to the Most Recent Advances in the Genomics Era

open access: yesAgriculture, 2022
Prospero Alpini was an Italian physician, botanist and scientist. Born in Marostica, in the Republic of Venice, in his youth he served in the Milanese army, but in 1574 he decided to study medicine at the University of Padova, where he graduated in 1578.
Alessandro Vannozzi   +3 more
doaj   +1 more source

The restrained inguinal hernia at children with violation a floor form

open access: yesБюллетень сибирской медицины, 2018
The most common surgical pathology of childhood, which is necessary for doctors of all specialties, is the inguinal hernia. In the treatment of this pathology, both open procedure and laparoscopic surgery are used. Infringement of a hernia, manifested by
M. A. Axel’rov   +4 more
doaj   +1 more source

An 80 year old hermaphroditic with Hugh Brenner Tumour: a Rare Case Report and Review

open access: yesAfrican Journal of Urology, 2018
Introduction: Hermaphroditism is a general term used to describe a sexual development disorder usually diagnosed at an early stage in sexual development.
G.N. Ayane   +3 more
doaj   +1 more source

Preventing self-fertilization: Insights from Ziziphus species

open access: yesFrontiers in Plant Science, 2023
The fitness of self-progeny individuals is inferior to that of their outcrossed counterparts, resulting in a reduction in a plant population’s ability to survive and reproduce.
Noemi Tel-Zur
doaj   +1 more source

Clinical spectrum of disorders of sex development: A cross-sectional observational study

open access: yesIndian Journal of Endocrinology and Metabolism, 2018
Objective: Disorders of sex development (DSD) constitutes a small but difficult and equally important area of endocrinology. It is often a social emergency as the decision regarding sex assignment in these cases is extremely disturbing and difficult to ...
Sheeraz A Dar   +6 more
doaj   +1 more source

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