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Genetics
Genetics words, definitions, and meanings, in one or more stack.
| Term | Definition |
|---|---|
| Heredity | the passing on of physical or mental characteristics genetically from one generation to another. |
| Sex Chromosomes | a type of chromosome that participates in sex determination |
| Trait | a specific characteristic of an organism. |
| Sex-Linked Gene | a trait in which a gene is located on a sex chromosome |
| Genetics | the study of heredity and the variation of inherited characteristics. |
| Carrier | a person or animal that transmits a disease-causing organism to others. Typically, the carrier suffers no symptoms of the disease (ex. coronavirus carrier) |
| Fertilization | the action or process of fertilizing an egg, female animal, or plant, involving the fusion of male and female gametes to form a zygote |
| Genetic Disorder | a disease caused in whole or in part by a change in the DNA sequence away from the normal sequence. |
| Purebred | consists of gene pairs with genes that are the same hybrid (also called Homozygous), and pairs of different hybrid (also called Heterozygous) |
| Pedigree | showing relationship between family members and indicates which individuals have a certain type of genetic pathogenic variants, traits, and diseases within a family as well as vital status |
| Gene (in informal use) | (in informal use) a unit of heredity which is transferred from a parent to offspring and is held to determine some characteristic of the offspring. |
| Gene (in technical use) | (in technical use) a distinct sequence of nucleotide forming part of a chromosome, the order of which determines the order of monomers in a polypeptide or nucleic acid molecule which a cell (or virus) may synthesize |
| Karyotype | the number and visual appearance of the chromosomes in the cell nuclei of an organism or species. |
| Allele | one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome |
| Selective Breeding | A process in choosing parents with particular characteristics to breed together and produce offspring with more desirable characteristics |
| Dominant Allele | a variation of a gene that will produce a certain phenotype, even in the presence of other alleles |
| Recessive Allele | a variety of genetic code that does not create a phenotype if a dominant allele is present |
| Inbreeding | (Technically defined or used) the mating of animals more closely related than the average relationship within the breed or population concerned |
| Hybridization | the process of combining two complementary single-stranded DNA or RNA molecules and allowing them to form a single double-stranded molecule through base pairing |
| Hybrid | the offspring of two plants or animals of different species or varieties, such as a mule (a hybrid of a donkey and a horse). |
| Clone | an organism or cell, or group of organisms or cells, produced asexually from one ancestor or stock, to which they are genetically identical. |
| Punnett Square | a table in which all of the possible outcomes for a genetic cross between two individuals with known genotypes are given |
| Genetic Engineering | the process of using recombinant DNA (rDNA) technology to alter the genetic makeup of an organism |
| Phenotype | the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment. |
| Genotype | an individual's collection of genes |
| Gene Therapy (1st part definition) | altering the genes inside your body's cells in an effort to treat or stop disease |
| Gene Therapy (2nd part definition) | Genes contain your DNA — the code that controls much of your body's form and function, from making you grow taller to regulating your body systems. Genes that don't work properly can cause diseas |
| Genome | the haploid set of chromosomes in a gamete or microorganism, or in each cell of a multicellular organism. |
| Homozygous | having two Identical alleles of a particular gene or genes |
| Heterozygous | having two Different alleles of a particular gene or genes |
| Ethics/Bioethics | branch of applied ethics that studies the philosophical, social, and legal issues arising in medicine and the life sciences |
| Meiosis | a process where a single cell divides twice to produce four cells containing half the original amount of genetic information |
| Incomplete Dominance | a form of intermediate inheritance in which one allele for a specific trait is not completely expressed over its paired allele |
| Crossing Over | the exchange of genes between homologous chromosomes, resulting in a mixture of parental characteristics in offspring. |
| Zygote | a diploid cell resulting from the fusion of two haploid gametes; a fertilized ovum. |
| Multiple Alleles | a type of non-Mendelian inheritance pattern that involves more than just the typical two alleles that usually code for a certain characteristic in a species |
| Codominance | a relationship between two versions of a gene |
| Gametes | a mature haploid male or female germ cell which is able to unite with another of the opposite sex in sexual reproduction to form a zygote. |
| Protein Synthesis | the process of creating protein molecules |
| Polygenic Inheritance | describes the inheritance of traits that are determined by more than one gene |
| Autosomal Chromosomes | any of the numbered chromosomes, as opposed to the sex chromosomes |
| Mutation | occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. |
| Messenger RNA | the form of RNA in which genetic information transcribed from DNA as a sequence of bases is transferred to a ribosome |
| Transfer RNA | RNA consisting of folded molecules which transport amino acids from the cytoplasm of a cell to a ribosome. |