Table of Contents
What have scientists learned about the elephant shrew based on DNA evidence?
Terms in this set (9) how have scientists determined the evolutionary relationships among species? what have scientists learned about the elephant shrew based on DNA evidence? Its actually more closely related to elephants then to mice and other rodents. what are three ways in which isolation can occur?
What causes evolutionary change?
Allele frequencies in a population may change due to four fundamental forces of evolution: Natural Selection, Genetic Drift, Mutations and Gene Flow. Mutations are the ultimate source of new alleles in a gene pool.
How are elephant shrews related to elephants?
Surprisingly, elephant shrews (also known as sengis) are not closely related to shrews as their name suggest, nor are they rodents, but are in fact distantly related to elephants and are in a family of their own – Macroscelidea. They date to at least 50 million years ago.
How does science influence philosophical views of change?
Scientific views of change have influenced philosophical views of change and of identity, particularly among philosophers impressed by science’s success at predicting and controlling change.
Which is the main concern of scientific change?
We begin with some organizing remarks. It is interesting to note at the outset the reflexive nature of the topic of scientific change. A main concern of science is understanding physical change, whether it be motions, growth, cause and effect, the creation of the universe or the evolution of species.
What does it mean when science is changing?
Clearly, to tell any story of ‘science changing’ means looking beneath the surface of those changes in order to find something that remains constant, the thing which remains science. Conversely, what one takes to be the demarcating criteria of science will largely dictate how one talks about its changes.
How is the synchronic dimension of Science Distinguished?
The synchronic dimension of science is one way views of scientific change can be distinguished. On one hand there are logical or rationalistic views according to which scientific activity can be reduced to a collection of objective, rational decisions of a number of individual scientists.