click below
click below
Normal Size Small Size show me how
Vocabulary Terms.
Genetics Vocabulary.
| Question | Answer |
|---|---|
| Heredity | The passing of traits from parents to their offspring. |
| Hybrid | An organism that has two different alleles for a trait. |
| Purebred | The offspring of many generations that have the same traits. |
| Trait | A characteristic that an organism can pass on to its offspring through its genes. |
| Offspring | The children of an organism. |
| Gene | The set of information or traits that you get from your parents. |
| Allele | The different forms of genes. |
| 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 dominate allele is present. |
| Homozygous Alleles | Having two identical alleles for a trait. |
| Heterozygous Alleles | Having two different alleles for a trait. |
| Genotype | An organism genetic makeup, or allele combination. |
| Phenotype | An organism's physical appearance, or visible traits. |
| Fertilization | The joining of sperm and an egg. |
| Punnet Square | A chart that shows all the possible combination of alleles that can result from a genetic cross. |
| Codominance | A condition in which neither of two alleles gene is dominant or recessive. |
| Proability | A number that describes how likely it is that an event will occur. |
| Mutation | A change in a gene or chromosome. |
| Chromosomes | A thread like chromatin in the nucleus condenses to form double-rod structure. |
| Sex Chromosomes | A pair of chromosomes carrying genes that determine whether a person is male or female. |
| Sex-Linked Trait | A trait genetically determined by an allele located on the sex chromosome. |
| Carrier | A person who has the recessive allele for a trait, but doesn't have the trait. |
| Pedigree | a chart or "Family Tree" that tracks which members of a family have a particular trait. |
| Karyotype | A picture of all the chromosomes in a cell arranged in a cell. |
| Genetic Disorder | An abnormal condition that a person inherits through genes or chromosomes. |
| Diploid | Genetics Having a pair of each type of chromosome, so that the basic chromosome number is doubled. |
| Haploid | A cell that only has half of a cells chromosomes. |
| Meiosis | The process that occurs in the formation of sex cells by which the number of chromosomes is reduced by half. |
| selective breeding | The process of selecting a few organisms with the desired traits to serve as the parents next generation. |
| inbreeding | A selective breeding method in which to individuals with identical or similar sets of alleles are crossed. |
| hybridization | A selective breeding method in which two genetically different individuals are crossed. |
| clone | An organism that is genetically identical to the organism from to the organism from which it was produced. |
| genetic engineering | The transfer of a gene from the DNA of one organism into another organism, in order to produce an organism with desired traits. |
| gene therapy | The insertion of working copies of a gene into the cells of a person with a genetic disorder in an attempt to correct the disorder. |
| Insertion | Mutation with one or more base pairs. |
| Deletion | The loss or absence of a section from a nucleic acid molecule or chromosome. |
| Genome | Is all the DNA in one cell of an organism. |
| Multiple alleles | Three or more forms of a gene that code for a single trait. |
| Messenger RNA | Copies the coded message from the DNA in the nucleus and carries the message t the ribosome. |
| Transfer RNA | Carries amino acids to the ribosome and adds them to the growing protein. |