Sentences with phrase «characteristics in vertebrates»

Androgen is the generic term for any natural or synthetic compound, usually a steroid hormone, that stimulates or controls the development and maintenance of masculine characteristics in vertebrates by binding to androgen receptors.

The discovery that each cell in a chicken can be inherently male or female is a huge departure from biological dogma, which holds that hormones control sex characteristics in vertebrates.

Not exact matches

But Iwashita warns that the experiments were only successful in very young rats, which seem to have the characteristics of much lower vertebrates, such as chickens.

A team led by Xing Xu at the Institute of Vertebrate Paleontology and Paleoanthropology in Beijing used computer software to examine evolutionary relationships among early birds and related dinosaurs, based on 374 skeletal characteristics.

In addition to the general characteristics of uniramians, these include a body composed of three tagmata, a head, thorax, and abodmen; a pair of relatively large compound eyes and usually three ocelli located on the head; a pair of antennae, also on the head; mouthparts consisting of a labrum, a pair of mandibles, a pair of maxillae, a labium, and a tonguelike hypopharynx; two pairs of wings, derived from outgrowths of the body wall (unlike any vertebrate wings); and three pairs of walking legs.