| 翻訳と辞書 |
| Sexual dimorphism in dinosaurs ： ウィキペディア英語版 |
Sexual dimorphism in dinosaurs
Sexual dimorphism in dinosaurs refers to the different physical characteristics of male and female dinosaurs of the same species. This means that the male and female dinosaurs of a species may differ in size, color, shape, or they may even look like a completely different species altogether, such as in the case of the anglerfish. These differing physical characteristics can also be the deciding factor for choosing a mate or can be helpful for blending into the surrounding environment. Researching sexual dimorphism in dinosaurs can be extremely difficult because suitable tissue and skeletal samples are required for testing, and most fossils and other samples have been damaged by decomposition and fossilization.
==Concept==
Sexual dimorphism refers to the phenotypic variations between male and female members of species. Examples include differences in morphology, size, ornamentation and behaviour. Sexual dimorphism, a by-product of sexual selection, is prominent across all categories of living organisms. For instance, peacocks display vibrant plumage colours in an attempt to attract and copulate with their female counterpart, the peahen. This form of temptation is defined as intersexual selection, the process in which female or male specimens choose among potential mates.〔 However, some groups of species acquire a mate by the means of competitively engaging in an aggressive confrontation among others, whereby the victor is entitled to its significant other, a concept coined as intrasexual selection.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Sexual dimorphism in dinosaurs」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|