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Genetics BCP

Definitions from Elarth's Genetics Unit

QuestionAnswer
Phenotype An organism's physical appearance OR visible traits
Punnett Square A chart showing the possible combination of alleles that can result from a genetic cross
Sex-linked trait A trait carried on the X chromosome
Recessive An allele that is masked ( hidden) when a dominant allele is present
Genotype An organism's genetic make up, or allele combos TT or tt or Tt
Gene Piece of DNA on a chromosome that codes for a specific trait.
Homozygous dominant Having 2 identical alleles for a trait ( Both dominant- TT)
Homozygous recessive Having 2 identical alleles for a trait-- both recessive ( tt)
Heterozygous Having 2 different alleles for a trait ( Tt)
Dominant An allele whose trait always shows up in the organism when it is there (You can see it)
Allele Different forms of a gene
Genetics The scientific study of heredity
Heredity The passing of traits from parent to offspring
Trait Physical characteristics for example: Black hair, green eyes.....
Created by: badderssu
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