(1)推理判断题。根据第一段Humans evolved (进化) from apes.This is what we learned in biology class.But what came before apes?Chinese scientists have discovered fossils that could enrich the evolutionary story of how humans evolved from fish.(人类由
In a phylogenetically controlled analysis, we found that species with menopause live longer than expected given their size (Fig.1b; proportion of posterior greater than zero is 0.99). The ordinary maximum lifespan (age at which 90% of adult life years have been lived) of whales with menopause...
A. amphibians could live on land B. fish became extinct C. amphibians were smaller D. fish could breathe air 相关知识点: 试题来源: 解析 A。解析:从鱼类进化到两栖动物是一个重大的进步,因为两栖动物可以生活在陆地上。鱼类没有灭绝,两栖动物不一定比鱼类小,鱼类不能直接呼吸空气。反馈...
we investigate evolutionary changes when genome regions become completely sex-linked, by analyses of multiple species of flatworms (Platyhelminthes; among which schistosomes recently evolved gonochorism from ancestral hermaphroditism), and roundworms (Nematoda) ...
K., 1972, Sexual selection and dimorphism in birds, in: Sexual Selection and the Descent of Man, 1871-1971 (B. Campbell, ed.), pp. 180–230, Aldine Press, Chicago. Google Scholar Sherman, P. W., 1980, Infanticide in Belding’s ground squirrels, in: Natural Selection and Social ...
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The regular mammalian X and Y chromosomes diverged from each other at least 166 to 148 million years ago, leaving few traces of their early evolution, including degeneration of the Y chromosome and evolution of dosage compensation. Results We studied the intriguing case of black muntjac, in which...
. Thefossil recordshows that a group of jawless fish from the Paleozoic era only had two semicircular canals. In order to understand the evolutionary changes that led three canals, the team looked at the only two types of jawless vertebrates that still exist on earth:lampreysand hagfish....
. Sex role reversal in pipefish. Adv. Stud. Behav. 32, 131–167 (2003). Article Google Scholar Darwin, C. . The Descent of Man, and Selection in Relation to Sex D. Appleton and Company (1871). Gwynne, D. T. & Simmons, L. W. . Experimental reversal of courtship roles in an ...
Inventors and Inventions of the Industrial Revolution inamphibian Ask the Chatbot a Question More Actions Print Cite Share Feedback External Websites Also known as: Amphibia Written by William E. Duellman Curator, Division of Herpetology, Museum of Natural History; Professor of Systematics and Ecology...