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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. |