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when both alleles are expressed in offspring, when neither allele for a trait is dominant
occurs when a group of gene pairs acts together to produce a single trait, which creates more variety in phenotypes
when a normal allele is placed into a virus, which delivers the normal allele when it infects its target cell, may be used to control genetic disorders, like cystic fibrosis
how scientists are experimenting to change the arrangement of DNA that makes up a gene
in a Punnett square, a small letter(t) stands for this kind of allele, the trait seems to disappear
made by inserting a useful segment of DNA from one organism into a bacterium, ex. human insulin
recessive genetic disorders
when both parents have a recessive allele responsible for the disorder and pass it to their child
the father of genetics, first to use mathematics to explain heredity and to trace one trait for generations
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