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21 Cards in this Set
- Front
- Back
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trait
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physical characteristics
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heredity
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The passing of traits parents to offspring.
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purebred
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Always produces offspring with the same form of a trait as the parent.
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genes
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The factors that controll traits.
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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.
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recessive allele
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An allele that is always covered up, or hid, when the dominant allele is present.
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hybrids
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Organism that has two different alleles for the trait.
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probability
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The liklihood that a particular event will occur.
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Punnett square
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A chart that shows all the combinations of aleles that can result from a genetic cross.
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phenotype
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physical appearance of an organism
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genotype
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genetic makeup of an organism
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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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the alleles are neither dominant or recessive
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sperm
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the male sex cell
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egg
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the female sex cell
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meiosis
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process where the number of chromosomes is reduced by half to form sex cells
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messenger RNA
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copies the coded message from the DNA in the nucleus and carries the message into the cytoplasm
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transfer RNA
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carries amino acids and adds them to the growing protein
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mutation
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changes in a gene or chromosome
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