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15 Cards in this Set

  • Front
  • Back
Define heredity
passing of traits from parents to offspring
trait
a characteristic that an organism can pass onto its offspring through its genes
genetics
the scientific study of heredity
fertilization
the joining of a sperm and an egg
purebred
the offspring of many generations with the same trait
Define gene
the set of information that controls a trait
Define alleles
the different forms of a gene
Define dominant allele
an allele who's trait always shows up in the organism when the allele is present
Define recessive allele
an allele that is masked when a dominant allele is present
Define hybrid
an organism that has two different alleles for the same trait
Define probability
a number that describes how likely it is that an event will occur
Define Punnett Square
A chart that shows all the possible combination of alleles that can result from a genetic cross
Define phenotype
an organism's physical appearance or visible traits
Define homozygous
having two identical alleles for a trait
Define heterozygous
having two different alleles for a trait