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Heredity and Adaptat

QuestionAnswer
Mutations are random. Natural selection is not.
How can organisms that reproduce asexually acquire new traits? through mutation
Mutations are beneficial, neutral, or harmful to the organism
common ancestor an organism from the past that is related to all the organisms in the group
heredity the passing of traits from parent to offspring
evolve to change
mutation a random change in an organisms DNA
biodiversity the variety of life forms that life on earth
natural selection the process by which the individuals best adapted to their environment tend to survive and pass on their traits to offspring
F1 generation offspring of the parent generation
P generation parent
genotype an organism's genetic code
phenotype an organism's physical appearance
allele different variations of a trait
dominant a form of a gene that 'takes over' a recessive gene
recessive a form of a gene that is expressed only when a dominant gene is not present
homologous structures structures found in different species that have a similar underlying structure
fossil record set of all known fossils
embyology similar embryos between species
vestigial structures body parts that have lost their original function through evolution
DNA evidence of evolution that requires advanced technology
law of superposition older fossils are found in deeper layers of earth
incomplete dominance when 2 alleles blend to form a whole new phenotype
codominance when both alleles are equally expressed at the same time
Created by: mrsfeeley
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