Exploring Harem Breeding

Which part of the cell contains chromosomes?

Which of the following is NOT a factor that can cause similarities and differences between offspring and their parents?

Which cells have unpaired chromosomes?

What determines the appearance or characteristics of an animal?

What is the role of genetics in the successful breeding of laboratory animals?

What is the process used to assess and document how an animal's genotype is expressed?

What are genes?

Which of the following reproductive problems may be accompanied by vaginal prolapse?

Which animals are more likely to neglect, kill, or cannibalize their young if disturbed by frequent observations or unusual environmental changes?

What is the recommended practice for handling newborn animals?

Which term refers to how the genes code the information for the body’s structure?

What is the term for how the body’s individual characteristics appear?

What is the term for a genetic alteration that occurs when a gene is damaged or changed?

Which animals are highly susceptible to infections due to a genetic mutation that prevents them from developing T lymphocytes?

Which of the following is a commonly inbred laboratory animal?

What is the minimum number of generations of brother-to-sister mating required to establish a strain?

Which mating system involves one male and one female selected by the breeder and housed together?

Which mating system results in the largest number of offspring from the least number of breeder animals?

During the estrous cycle, when does a female animal become receptive to mating?

What is the time between fertilization and birth called?

Why is knowledge of the normal gestation period important in maintaining laboratory animal colonies?

Which breeding scheme produces more vigorous animals with a larger litter size?

Which breeding system reduces the number of breeding animals needed and permits accurate recordkeeping, but has high labor costs?

What is the purpose of providing a lighting system that provides 12 to 14 hours of light each day in rodent breeding colonies?

What is the purpose of the 'milk spot' in neonatal rodent pups?

Which health problems may occur in breeding females of many species?

Which of the following animals is NOT commonly used in biomedical research?

What is the purpose of genetic engineering in biomedical research?

What is a knockout animal in biomedical research?

In which research areas are knockout mice commonly used?

True or false: Genetics is the study of why offspring resemble or differ from their parents due to heredity?

True or false: Genes are the biological units by which traits are inherited?

True or false: Genetically manipulated animals, such as transgenic mice, are primarily used for breeding purposes in laboratory research?

True or false: Genes are made up of ribonucleic acid (RNA) molecules?

True or false: The only cells in which the chromosomes are not paired are ova and sperm cells?

True or false: Recessive genes are more easily expressed than dominant genes?

True or false: Phenotyping is a process used to assess and document how an animal's genotype is expressed?

True or false: Genotype refers to how the body's individual characteristics appear?

True or false: Mutations can only occur spontaneously and not be brought about by environmental factors?

True or false: Genetically engineered animals are predominantly pigs and zebrafish?

True or false: The genetic alteration that causes a mutation can be observed in an animal's behavior or appearance?

True or false: The gestation period for all species is the same.

True or false: Transgenic animals contain new genes that are from another species or have been altered within the same species?

True or false: Breeding strategies for zebrafish aim to maximize genetic diversity.

True or false: Knockout animals contain an altered gene that has been designed to 'turn off' a specific gene?

True or false: Outbreeding usually produces less vigorous animals than inbreeding.

True or false: Knock-in animals contain new DNA that has been designed to change a specific gene by creating a mutation?

True or false: Outbreeding typically results in a smaller litter size compared to inbreeding.

True or false: Fertilization in most mammals occurs within the female's reproductive tract?

True or false: Harem breeding eliminates the need to move pregnant animals?

True or false: Separate housing is the system of choice if males and females are aggressive toward each other?

True or false: Rodents and their pups communicate with each other by audible vocalizations?

True or false: A lighting system that provides 12 to 14 hours of light each day is best for most rodent breeding colonies?

True or false: Vaginal prolapse is a common symptom of dystocia and other reproductive problems in breeding animals?

True or false: It is recommended to minimize handling of newborn animals to avoid the loss of the litter?

True or false: Some animals may neglect, kill, or cannibalize their young if disturbed by frequent observations or unusual environmental changes?

True or false: Inbreeding is a mating scheme used to produce animals with maximal genetic variation.

True or false: A strain is considered to be established after a minimum of 10 generations of brother-to-sister mating.

True or false: Rodents are the most frequently outbred laboratory animals.

True or false: Inbreeding is occasionally used in non-rodent species, such as rabbits, to produce offspring that are as genetically dissimilar as possible.

What is the difference between genotype and phenotype?

How can environmental factors influence phenotype?

What is a mutation?

What is the role of technicians in identifying mutations in animals?

What is the purpose of chromosomes in cells?

What is the difference between dominant and recessive genes?

How is an animal's genotype determined?

What are phenotype and phenotyping?

What is genetics and why is it important in the study of heredity?

What are genes and how do they contribute to inheritance?

How have advances in molecular biology impacted animal genetics and research?

What are some reproductive problems that may be observed in breeder animals?

Why is it important for the veterinary staff to be notified immediately in cases of breeder animal health problems?

What are some strategies to avoid the loss of a litter in newborn animals?

What are transgenic animals and how are they created?

What is a knockout animal and how does it differ from a transgenic animal?

What is a knock-in animal and how is it used in biomedical research?

Describe the process of sexual reproduction in mammals and how it differs in other species.

What is the purpose of knowing the gestation period for a species in the maintenance of laboratory animal colonies?

Why is it important to collect cells from the vagina and examine them under a microscope when determining the best time for mating?

What breeding strategies are recommended for maximizing genetic diversity in zebrafish?

What are the two most commonly used outbred mouse stocks?

What is inbreeding and why is it used in animal breeding?

How many generations of brother-to-sister mating are required for a strain to be considered established?

Which animals are the most frequently inbred laboratory animals?

What is the consequence of an accidental mating to an unrelated animal or an animal of a different strain in an inbred line?