evolution
survival of the fittest is also called ____
natural selection
the survival and reproduction of the organisms that are genetically best fit for their environment
natural selection
the difference in mating activity is which kind of isolation
temporal
the hip bones of a dolphin and the tailbone are examples of what
vestigial structures
what is the ability of an organism to survive and reproduce in its environment?
fitness
an explanation supported by evidence for how populations changed over time
evolution
the variety of dog and cat breeds that we have today are a product of _____ ______
artificial breeding/selective breeding
a variation in an organism that helps it survive is called an ______
adaptation
give an example of a structure that is homologous to a cats paw
dogs paw, human arm, bat wing, whale flipper, etc;
the movement of genes into and out of the population (immigration and emigration)
gene flow
charles darwin
what are the names of the islands where Charles Darwin studied and gathered much of his evidence for natural selection
the Galapagos islands
the process in which two species (a flower and a pollinating insect) evolve in response to each other
coevolution
body parts that share a common function but have a different structure
analogous structures
when allele frequencies in a population change as a result of random chance. occurs more frequently in small populations
genetic drift
true or false: sexual reproduction increases genetic variety and evolution
true
________ said that organisms acquire traits during their lifetime and then pass them onto their offspring
Lamarck
a shark and a dolphins appearance are a great example of _____ evolution
convergent
when two organisms share a large amount of similar DNA, what does that tell the scientists
they are closely related/they share a common ancestor
the process of species formation
speciation
the more alike two different organisms are, the more recently they shared a ______ _______
common ancestor
a child catches a fly and pulls its wings off. the fly actually lives a better life but does not pass its lack of wings onto its offspring because the loss of its wings is an example of ______ ______
acquired trait
this type of isolation occurs when 2 populations are separated by barriers and evolve differently to the separation
geographical
the study of living things before birth (more similarities, more commonly related)
embryology
why, in evolutionary terms, is it important for new individuals to come into a population
they bring new DNA, which brings about evolution