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Chapter Review


Term(s) / QuestionDescription(s) / Answer
Structural Adaptation bird's beak shape, coloration, seed structure based on dispersal
Behavioral Adaptation Running from predator, hibernation, Aestivation, playing possum
Genetic Trait can be changed by mutation (which leads to evolution), selective breeding, and natural selection
Genes Genetic traits are formed by the environment and ____
Charles Darwin __ was an English scientist of hte 1800's. His job on the Beagle was to learn as much as he could about the living things he saw on the voyage.
Food, water, living space When members of a species compete, what do they compete for?
Species A(n) ___ is a group of similar organisms that can mate with one another and produce fertile offspring
Adaptation A(n) ___ is a trait that helps an organism survive and reproduce
Theory A scientific ___ is a well- tested concept that explains a wide range of observations.
Natural Selection The process by which individuals that are better adapted to their environment are more likely to survive and reproduce is called ___
Variation That some newly hatched turtles can swim faster than others of the same species is evidence of ___ within the species.
Segregation Each parent passing only one allele for a trait to it's offspring is known as ___
Dominant A trait seen in each gereration is ___
Pea Mendel worked with ___ plants to learn about heredity.
Adaptions Darwin's theory proposes that changes happen from generation to generation from ___ of an organism to the environment
External The temperature in which an organism lives is an example of a(n) ___ environmental influence
Extinction Sometimes, ___ occurs because of the destrution of a habitat
Offspring The outcome of 2 parents reproducing is an ___
Internal examples of __: mutation, genotype
External examples of __: temperature, sunlight, amount of food
Alfred Russell Wallace theory: evolution by natural selection
Gregor Mendel theory: principle of dominance
Reginald C. Punnett theory: Punnett squares
Mendel's law alleles for 1 trait do not have an affect on how alleles fora another trait are inherited
Traits features an organism inherits from its parents
Dominant these alleles show their effect on the phenotype whenever they are present in the genotype
Phenootype combination of actual genetic makeup and the environmental effect on that makeup
Genotype an organism's genetic makeup
genetics science of heredity
extinction the demise of an entire species
mutation change in DNA that forms new alleles
evolution change in the genetics of a species over time
natual selection organisms that are better suited to their environment survive and reproduce at a greater rate than organisms that are not
adaptive radiation production of several specties from one ancestral species is called __
What happens when a species overproduce offspring? food and other resources are limited so many individuals of a species will not survive to reproduce
Suppose a variation makes an individual member of a species better adapted to its environment, how might that variation affect the individual's reproduction? If the variation makes the individual member better adapted the environment, then it will more likely survive to reproduce offspring.
How does the environment "select" organisms? The environment "selects" organisms that are better adaptedto their environment thus have a better chance to survive and reproduce.
How do helpful variations accumulate in a species over time? Helpful variations accumulate through natural selection, as the organisms that are better adapted th their environment reproduce offspring with the same variations.
Why can only the traits controlled by genes be acted upon by natural selection? Only genes are passed from parents to their offspring.
How might the isolation of a group result in a new species? If a group is isolated from the rest of the species long enough to evolve different traits, a new specties could evolve.
Created by: cococutie428
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