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McC 8 Ecology/Bio

ecosystems and genetics

QuestionAnswer
traits all of the features that an organism inherits
gene part of the DNA code on a chromosome
genotype the genes that an organism has - its genetic make up
phenotype the combination of the genetic make up and the environment's effect on that make up.
genetics the study of heredity
allele the various forms of a gene
dominant alleles shows their effect on the phenotype whenever they are present int he genotype
recessive alleles shows their effect on the phenotype only whenever two of them are present in the genotype
Punnett Square a probablity to chart to help us make and understand genetic predictions
evolution the change in genetics of a species over time; proposed by Darwin and Wallace
natural selection organism which are better adapted to an environment survive and reproduce at greater rates than organisms that are not.
mutation process in which DNA changes results in new alleles
adaptive radiation the production of many species from one ancestral species
extinction occurs when the last individual of a species dies.
heterozygous organisms with different alleles for the same trait (hybrid); ex. Bb
homozygous organism with same alleles (purebred); ex. BB or bb
Created by: aberndt
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