evolution Word Scramble

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Question	Answer
any pre-existing organism preserved in a material, such as rock, shells, mud or amber	fossils
idea that says that organisms with favorable characteristics survive and reproduce at a greater rate	natural selection
a group of closely related organisms capable of mating and producing fertile offspring	species
small or incomplete organs that have no apparent function	vestigial organs
a process by which existing species change or branch into a new species	evolution
these are different forms of the same elements, due to a different number of neutrons	isotopes
structures in different species that have the same evolutionary origin	homologous structures
he developed the idea that the more an organism used a body part, then the part would develop more	Lamarck
structures or behaviors that enable an organism to survive in a given environment	adaptations
He felt that due to certain characteristics, surviving individuals have an advantage over others in the competition for resources	Darwin
What type of evidence of evolution is : bones in a bird's wing and a human's arm are similar in structure	homologous structure
What evidence of evolution is: all organisms use ATP in energy transfer	biochemical
What evidence of evolution is: there are similarities in structure among the early stages of fish, birds and humans	embryology
What evidence of evolution is: humans, unlike rabbits, have no known use for their appendix	vesitgial organs
What evidence of evolution is: horses have increased in size and decreased in number of toes since the Eocene	fossil evidence
all genes in a population is called	gene pool
when brief periods of change interrupt long stable periods there is	puncutated equilibrium
changes in gene frequency in small populations is called	genetic drift
changes that occur gradually over time are called	gradualism
Darwin is associated with the process of	natural selection
this is used to determine the age of fossils	radioactive dating
Gene or choromosomal changes are called	mutations
When many species vanish at one time it is called	mass extinction
Mendel is associated with the evolutionary concept of	use and disuse
when unrelated species become less alike it is called	divergern evolution
when unrelated species become more alike it is called	convergent evolution
The steps in Darwin's theory are:	overproduction, struggle for existence, variation, natural selection
Most fossils are found in	sedimentary rock
reasonably accurate dating of fossils is possible by measuring the break down of ___________ in the rock	carbon isotopes
body parts that show a similar structure but are used differently by different species are	homologous structures
a structure or behavior that contribures to the survival of an organism in a particular environment is called an	adaptation
the amount of time it takes for one half of an isotope sample to change and become a new element is the isotope's	half-life
when dramatic changes are followed by long periods of stability it is called	punctuated equilibrium
when many species develop from a single ancestor there is	convergent evolution
when unrelated species have similar adaptations this has occurred	stabilizing selection
when harmful mutations do not increase in frequency this occurrs	stabilizing selection
Did birds, reptiles, fish or worms evolve most recently	birds
natural selection	acts on variations with populations
incomplete body organs that seem to have no useful function in a particular species are called	vestigial
embryos of related organisms show	many similarities
a change in allele frequency can lead to	speciation and a different genetic equilibrium

Created by: KPatrickwcu12

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