Exploring Harem Breeding

<p>Genotype</p> Signup and view all the answers

<p>Genetics helps choose the breeding system</p> Signup and view all the answers

<p>Phenotyping</p> Signup and view all the answers

<p>Sets of instructions that determine traits</p> Signup and view all the answers

<p>Dystocia</p> Signup and view all the answers

<p>Rabbits</p> Signup and view all the answers

<p>Minimal handling</p> Signup and view all the answers

<p>Genotype</p> Signup and view all the answers

<p>Phenotype</p> Signup and view all the answers

<p>Mutation</p> Signup and view all the answers

<p>Nude mice</p> Signup and view all the answers

<p>Rodents</p> Signup and view all the answers

<p>20</p> Signup and view all the answers

<p>Monogamous mating</p> Signup and view all the answers

<p>Polygamous mating</p> Signup and view all the answers

<p>During estrus (heat)</p> Signup and view all the answers

<p>Gestation period</p> Signup and view all the answers

<p>To ensure successful mating leading to healthy offspring</p> Signup and view all the answers

<p>Outbreeding</p> Signup and view all the answers

<p>Separate housing</p> Signup and view all the answers

<p>To ensure consistent estrous cycles in females</p> Signup and view all the answers

<p>To hold the milk in the pups' stomach</p> Signup and view all the answers

<p>Dystocia and vaginal prolapse</p> Signup and view all the answers

<p>Dog</p> Signup and view all the answers

<p>To create transgenic animals with genes from another species</p> Signup and view all the answers

<p>An animal that has an altered gene designed to 'turn off' a specific gene</p> Signup and view all the answers

<p>Cancer, obesity, and diabetes</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>Genotype refers to the genetic information for the body's structure, while phenotype refers to how the body's individual characteristics appear.</p> Signup and view all the answers

<p>Environmental factors can shift the phenotype away from the plan coded by the genotype.</p> Signup and view all the answers

<p>A mutation is a genetic alteration that occurs when a gene is damaged or changed.</p> Signup and view all the answers

<p>Technicians should notice and report unusual behavior or appearance in animals whose phenotypes are different from others in the same group.</p> Signup and view all the answers

<p>Chromosomes are long structures made of DNA molecules that carry genes and determine an organism's traits.</p> Signup and view all the answers

<p>Dominant genes are more easily expressed and contribute to the appearance or characteristics of an animal, while recessive genes are less easily expressed.</p> Signup and view all the answers

<p>An animal's genotype is determined by the specific genetic makeup of its genes.</p> Signup and view all the answers

<p>Phenotype refers to the physical and physiological characteristics of an animal, such as its appearance and internal physiology. Phenotyping is the process of assessing and documenting how an animal's genotype is expressed.</p> Signup and view all the answers

<p>Genetics is the scientific study of heredity, which is the passing of traits or physical characteristics from parents to offspring. It is important in understanding why offspring resemble or differ from their parents and in studying the role of genes in determining traits.</p> Signup and view all the answers

<p>Genes are the biological units by which traits are inherited. They are sets of instructions that determine what traits can be expressed in an animal. Genes contribute to inheritance by passing down the genetic information that codes for the body's structure and physical characteristics.</p> Signup and view all the answers

<p>Advances in molecular biology have led to well-defined animal genetics and the development of genetically manipulated animals, such as transgenic mice. These genetically manipulated animals are used as animal models to understand normal biological functions, disease states, and for the development of treatments.</p> Signup and view all the answers

<p>Dystocia, miscarriage, and vaginal prolapse</p> Signup and view all the answers

<p>To address the reproductive problems and provide appropriate medical care</p> Signup and view all the answers

<p>Minimal handling, delaying cage changes, and avoiding unnecessary husbandry practices</p> Signup and view all the answers

<p>Transgenic animals are animals that contain new genes either from another species or altered within the same species. They are created through genetic engineering, where the genes are manipulated in the laboratory and then transferred into an animal.</p> Signup and view all the answers

<p>A knockout animal contains an altered gene that has been designed to 'turn off' a specific gene, preventing it from being expressed. This can lead to observable changes in appearance, behavior, and physiological or biochemical characteristics. In contrast, a transgenic animal contains new genes that are either from another species or have been altered within the same species.</p> Signup and view all the answers

<p>A knock-in animal contains new DNA that has been designed to change a specific gene, often by creating a mutation associated with a disease. For example, a knock-in mouse may contain a mutation that causes a known cancer-causing gene to change its pattern of expression. Knock-in animals are used to study the effects of specific genetic mutations on disease development.</p> Signup and view all the answers

<p>In most mammals, fertilization occurs within the female's reproductive tract, and the resulting zygote becomes implanted and grows in the uterus. However, in other species such as most amphibians, fertilization occurs outside the female's body, and embryo development also occurs externally.</p> Signup and view all the answers

<p>The knowledge of the gestation period is important for breeding animals and ensuring successful mating and healthy offspring.</p> Signup and view all the answers

<p>Examining cells from the vagina allows for the determination of when the female is entering the estrus stage of her cycle and is ready for mating.</p> Signup and view all the answers

<p>To maximize genetic diversity in zebrafish, researchers should eliminate sibling matings, maximize effective population size, and periodically import individuals from outside populations.</p> Signup and view all the answers

<p>The two most commonly used outbred mouse stocks are CF1, ICR, and Swiss.</p> Signup and view all the answers

<p>Inbreeding is a mating scheme used to produce animals with minimal genetic variation. It is used to produce animals that share most genetic characteristics and have nearly identical genes.</p> Signup and view all the answers

<p>A strain is considered to be established after a minimum of 20 generations of brother-to-sister mating.</p> Signup and view all the answers

<p>Rodents are the most frequently inbred laboratory animals.</p> Signup and view all the answers

<p>It contaminates the inbred line and destroys its usefulness.</p> Signup and view all the answers