与 «PENTADACTYLY»相关的英语书籍
在以下的参考文献中发现
pentadactyly的用法。与
pentadactyly相关的书籍以及同一来源的简短摘要提供其在 英语文献中的使用情境。
1
University of California San Francisco Magazine
Preternatural. Pentadactyly. in. the. Age. of. Planetary. Probes: Should. NASA.
Send. Astronauts. to. Mars? Frank R. Vlfilson, MD University of California, San
Francisco Presented at NASA Goddard Space Flight Center 14 April 2000
Science ...
... bathing or even when scratching themselves with a trunk-held branch (Beck,
1980). However, it is now far from clear whether the oldest tetrapods did in fact
possess pentadactyly (Gould, 1991), as Acanthostega and Ichthyostega from the
...
3
How Vertebrates Left the Water
The most recent analyses suggest instead that pentadactyly appeared only once,
in stem tetrapods, before the appearance of amphibians and reptiliomorphs (Fig.
4.9). This implies that our last common ancestor with lissamphibians (frogs, ...
4
Herpetology: An Introductory Biology of Amphibians and Reptiles
The evolution of pentadactyly and terrestriality appear closely linked. The
recently discovered Pederpesfinneyae, a terrestrial tetrapod from the end of the
Early Carboniferous, probably had hindlimbs capable of walking. Feeding The
presence ...
Laurie J. Vitt, Janalee P. Caldwell, 2013
5
The Adaptive Seascape: The Mechanism of Evolution
Polydactyly (excess digits) is a rare trait in humans, inherited as a simple
dominant to pentadactyly (five digits per appendage), the far more common
homozygous recessive condition. In this case, the recessive allele for
pentadactyly is clearly ...
6
Gaining Ground: The Origin and Evolution of Tetrapods
If this is correct, taken together with the manual digits, it suggests that the hind
limb achieved pentadactyly in advance of the forelimb. This is in accord with the
suggestion that development of the hind limb became advanced over that of the ...
7
Swine in the Laboratory: Surgery, Anesthesia, Imaging, and ...
... ribs or rudimentary fifteenth rib 18% One cleft rib 16% Fourteenth rib
rudimentary 15% Thirteen ribs 6% Fused ribs 6% Small ossification centers in the
muscles between scapulae 22% (spinous processes of thoracic vertebrae)
Pentadactyly, ...
8
Eight Little Piggies: Reflections in Natural History
And now, the point about pentadactyly and its limits: The Amniota do, indeed,
show the canonical pattern of five toes upon each limb (or some modification
from this initial state). But Amphibia, both living and fossil, have five toes on the ...
9
Strickberger's Evolution
3 Until the early 1990s, the basal number of digits conserved throughout tetrapod
evolution was understood to be five (pentadactyly). The discovery by Coates and
Clack (1990) that the earliest tetrapods had at least seven or eight and as ...
Brian K. Hall, Benedikt Hallgrímsson, 2011
10
The Variety of Life: A Survey and a Celebration of All the ...
Pentadactyly is merely a primitive feature of all modern tetrapods and tells us
nothing about the particular relationships of particular tetrapods, one to another.
Many tetrapods have abandoned strict pentadactyly: for example, frogs tend to
have ...
