science cross word

is the process by which modern organisms have descended from ancient organisms
preserved remains or evidence of an ancient organism
occurs when biological populations of the same species become isolated from eachother
is the process through which new species evolve from a single ancestral species while inhabiting the same geographic region.
group of similar organisms that can breed and produce fertile offspring
inherited characteristic that increases an organism's chance of survival
in an organism that has lost all or most of its original function in the course of evolution, such as human appendixes.
structures that have different mature forms in different organisms but develop from the same embryonic tissues
To examine how species are related
change or difference in condition
Fossils or organisms that show the intermediate states
adapted to their environment tend to survive and produce more offspring.
The movement and exchange of genes or alleles from one population of species to another.
the relative frequency of different genotypes in a small population.
the changing of the structure of a gene.
event that drastically reduces the size of a population.
the stock of different genes in an interbreeding population.
a rudimentary stage that shows potential for development.
the continued existence of organisms that are best adapted to their environment.
the condition of being physically fit and healthy.
a group of organisms share a most recent common ancestor.
simply passing traits from parent to offspring.
the classification of something, especially organisms.
the classification of something, especially organisms.
is a measure of the relative frequency of an allele on a genetic locus in a population.
an idea used to account for a situation or justify a course of action.