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4.1
Term | Definition |
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heredity | The passing of traits from parents to offspring. |
trait | A characteristic that an organism can pass on to 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 that have the same traits. |
gene | The set of information that controls a trait;a segment of DNA on a chromosome that codes for a specific trait. |
alleles | The different forms of a gene. |
dominant allele | An allele whose trait always shows up in the organism when the allele is present. |
recessive allele | An allele that is masked when a dominant allele is present. |
hybrid | An organism that has two different alleles for a trait;an organism that is heterozygous for a particular trait. |