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18 Cards in this Set
- Front
- Back
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Heredity
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The passing of traits from parents to offspring.
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Trait
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A characteristic that an organism can pass on to its offspring through its genes.
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Genetics
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The scientific study of heredity.
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Fertilization
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the process in which an egg cell and a sperm cell join to form a new organism.
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Purebred
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The offspring of many generations that have the same traits.
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Gene
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The set of information that controls a trait; a segment of DNA on a chromosome that codes for a specific trait.
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Alleles
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The different forms of a gene.
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Dominant Allele
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An allele whose trait always shows up in the organism when the allele is present.
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Recessive Allele
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An allele that is masked when a dominant allele is present
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Hybrid
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An organism that has two different alleles for a trait; an organism that is heterozygous for a particular trait.
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Probability
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A number that describes how likely it is that an event will occur.
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Punnett Square
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A chart that shows all the possible combinations of alleles that can result from a genetic cross
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Phenotype
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An organism’s physical appearance, or visible traits
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Genotype
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An organism’s genetic makeup, or allele combinations.
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Homozygous
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Having two identical alleles for a trait.
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Heterozygous
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Having two different alleles for a trait.
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Codominance
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A condition in which neither of two alleles of a gene is dominant or recessive.
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Meiosis
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The process that occurs in the formation of sex cells (sperm and egg) by which the number of chromosomes is reduced by half.
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