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Genetics Vocab #4

TermDefinition
Punnett Square Used to predict probability of traits based on parent genotypes.
Codominance Neither allele is dominant or recessive, so both phenotypes are expressed.
Incomplete dominance Both alleles are partially expressed, producing a blended appearance.
Polygenic inheritance When multiple genes determine a trait.
Pedigree A chart used to trace and study genetic family histories. Like a family tree but used to observe traits.
Genetic mutation A change in DNA. Caused by random changes in DNA, harmful radiation or environmental factors.
Genetic disorder A disease that is caused by changes or mutations in DNA.
Sex-linked traits Carried on the X chromosome. Males are more likely to inherit the trait.
Selective breeding Process of selecting and breeding parent organisms to pass on particular traits.
Genetic engineering Process in which an organism's DNA is purposely changed.
Cloning Process of creating an identical organism from the DNA of another.
 

 



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