Crossword Questions Flashcards
_____ of the fittest is darwins explanation for diversity in natire
Survival
Preserved remains of an ancient organism
Fossil
Evolution of a species without a physical barrier.
Sympatric
Random change in genetic material ghat can be harmfal, lethal, or advantageous
Mutation
An inherited trait that improves the chances of survival and reproduction for an organism
Adaption
Change is the look (phenotype) of an organism over time
Macroeveolution
Form of evolution in which different organisms produce species that are similar in appearance and behaviour.
Convergent
A change in the allelic frequencies in a population that is due to chance.
Genetic drift
Form of evolution also known ad adaptive radiation
Divergent
Acts to select individuals that are the best adapted for survival and reproduction (similar to artificial selection)
Natiral selection
Type of natural selection in which one extreme phenotype becomes a favourable adaption.
Directional
State of existence that involves very little or no change
Genetic equilibrium
Structures that look similar but function differently
Homologous
Entire genetic content of a population
Gene pool
____ organs are remnants of structures that were once useful in primitive ancestors but are now disppearing
Vestigial
A change in genetic makeup of a population over time
Evolution
Process, also known as divergent evolution, in which one species gives rise to many species
Adaptive radiation
Body parts that look different but have the same function and different internal organs
Analogous
Evolutionary history of species
Phylogeny
Author of “the origin of species by means of natural selection@
Farwin
Measure of the relative contribution an individual trait makes to the next generation
Fitness
____ determines the approximate age pf fossils based on the law of superposition
Relative dating
Method used to construct a hypothetical evolutionary tree
Cladistics
Rate of speciation that occurs slowly and gradually
Gradualism
Creation of new species through the process of natural selection
Speciation
Individuals of the same species that can interbreed and are located in a given area
Population
Type of reproductive isolation that operated before fertilization
Pre-zygotic