Results 51 to 60 of about 14,827,768 (262)
Clade‐wide morphological and functional variation of the sauropsid columella
The Anatomical Record, EarlyView.Abstract The columella (=stapes) is the middle ear bone of reptiles that transmits vibrations from the environment to the inner ear. It has been shown to exhibit extensive interspecific morphological disparity in several clades; however, its morphological variation and associated functional consequences remain poorly described.
John Peacock +4 more
wiley +1 more source
BMC Plant Biology, 2009 Background Arabidopsis ovules comprise four morphologically distinct parts: the nucellus, which contains the embryo sac, two integuments that become the seed coat, and the funiculus that anchors the ovule within the carpel.
Skinner Debra J, Gasser Charles S
doaj +1 more source
The Anatomical Record, EarlyView.Abstract Hyperodapedontine rhynchosaurs possessed a unique oral apparatus, long interpreted as an adaptation for processing abrasive and resistant plant material. However, the microanatomical and histological evidence supporting this interpretation remains poorly documented.
Caio A. Scartezini +3 more
wiley +1 more source
Türkiye Tarımsal Araştırmalar Dergisi, 2019 In this study, the effects of spermidine and putrescine on the haploid plant obtention via ovule culture were investigated in Sakız and dark green squashes.
Begüm KARA, Nebahat SARI
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A man of his time: Joseph Leidy, racial science, and American anatomy
Anatomical Sciences Education, EarlyView.Abstract Professor Joseph Leidy M.D. was arguably the most influential anatomist in the nineteenth‐century United States, having written over 500 publications and serving as the first President of the Association of American Anatomists. While many of Leidy's diverse contributions to American science and medicine are well‐known, scholars have said much ...
Christopher D. E. Willoughby
wiley +1 more source
OENO One, 1995 Gynaecium ontogenesis of Vitis vinifera L. var. Chardonnay is followed up stage by stage. It is divided into twenty stages from initial meristem at the top of pedicel till just after the fruit is set.
Monique Fougère-Rifot +3 more
doaj +1 more source
The Effect of Adrenalectomy on Ovulation and Follicular Development in the Rat [PDF]
Biology of Reproduction, 1976 The effects of bilateral adrenalectomy and/or unilateral ovariectomy on ovulation and follicular development were studied in female rats. Th e animals were allowed to either cycle for 1 estrous sycle before being killed or to cycle for 30 days before sacrifice.
R D, Peppler, J J, Jacobs
openaire +2 more sources
Evidence for adaptive explanations of semelparity in animals
Biological Reviews, EarlyView.ABSTRACT Semelparity, the reproductive strategy of reproducing once, is widespread but uncommon in animals. Classes of models to explain the evolution of semelparity are based either on age structure and mortality schedules – demographic models in which high post‐reproductive mortality risk favours high reproductive effort and semelparity results from ...
Diana O. Fisher +1 more
wiley +1 more source
Oogenesis and germinal bed morphology of the brown anole (A. sagrei)
Developmental Dynamics, EarlyView.Abstract Background The brown anole is a model species of the genus Anolis, a squamate (encompassing lizards and snakes) group widely studied in evolutionary, behavioral, and developmental biology. Full genome annotation, the establishment of gene editing techniques, and comprehensive description of reproductive tract morphology and embryogenesis in ...
Bonnie K. Kircher +12 more
wiley +1 more source
IDB Newsletter: Vol. 7, no. 4, October 1969
, 1969 IDB Newsletter is a monthly publication of the Inter-American Development that reports on the activities of the Inter-American Development Bank and appears in English and Spanish ...
Inter-American Development Bank
core +1 more source