Chapter 17 - Quiz Flashcards
(22 cards)
What is the scientific study of heredity called?
a. Transgenesis
b. Genetic engineering
c. Genetics
d. Traits
c. Genetics
A permanent change in an inherited or genetic factor is called a:
a. persistent trait.
b. transferred characteristic.
c. rotation.
d. mutation.
d. mutation.
What do genes consist of?
a. DNA in the chromosome
b. DNA in the ribosome
c. RNA in the chromosome
d. RNA in the ribosome
a. DNA in the chromosome
What do chromosomes consist of?
a. Proteins and fat tissue
b. RNA and organelles
c. Amino acids
d. DNA and proteins
d. DNA and proteins
What is the term for an animal’s observable characteristics, including its physical appearance and internal physiology?
a. Genotype
b. Phenotype
c. Karyotype
d. Histiotype
b. Phenotype
What is it called when an animal contains altered DNA designed to turn off a specific gene?
a. Punchout
b. Knockin
c. Knockout
d. Recessive
c. Knockout
If an animal has an impairment in part of the immune system, it is referred to as being:
a. immunoabnormal
b. immunodeficient
c. pathodeficient
d. nonfunctional.
b. immunodeficient
Which of the following is NOT a standard method to check for pregnancy in rodents?
a. Weight monitoring
b. Urine dip stick test
c. Taking a radiograph (x-ray)
d. Gentle palpation
b. Urine dip stick test
In relation to rodents, what does genetic engineering mean?
a. Genes are specified in an engineered design.
b. Rodents were cross-bred and then inbred to create special strains.
c. Genes were manipulated in the laboratory and transferred into an animal.
d. Engineered genes were removed from a mouse and cultured in the laboratory.
c. Genes were manipulated in the laboratory and transferred into an animal.
What is the period of time between fertilization and birth called?
a. Conception
b. Gestation
c. Parturition
d. Kindling
b. Gestation
Mucous plugs may remain in a female rodent’s vagina for up to how long after mating?
a. 24 hours
b. 6 hours
c. 48 hours
d. 12 hours
a. 24 hours
What breeding method produces animals with minimal genetic variation?
a. Outbreeding
b. Inbreeding
c. Crossbreeding
d. Nearbreeding
b. Inbreeding
What breeding method produces the maximum amount of genetic differences between animals from the same colony?
a. Outbreeding
b. Inbreeding
c. Nearbreeding
d. Line breeding
a. Outbreeding
What type of animals result when there have been at least 20 generations of brother and sister matings?
a. Outbred strain
b. Outbred stock
c. Inbred stock
d. Inbred strain
d. Inbred strain
Which of the following is TRUE about inbred strains of mice?
a. Pups may need extra time with their mothers before weaning.
b. They tend to be more vigorous and better breeders.
c. They are usually white in color.
d. They rarely cannibalize their young.
a. Pups may need extra time with their mothers before weaning.
Under which mating system is it difficult to determine which dam gave birth to specific pups?
a. Harem mating
b. Hand mating
c. Monogamous mating
d. Cross breeding
a. Harem mating
Which species are brought together only for mating and separated immediately after mating takes place?
a. Rats and dogs
b. Hamsters and rabbits
c. Cats and ferrets
d. Guinea pigs and nonhuman primates
b. Hamsters and rabbits
When breeding mice, breeding records are nice to have but not essential.
a. True
b. False
b. False
Which breeding scheme results in the largest number of offspring from the least number of breeding animals?
a. Monogamous mating
b. Inbred mating
c. Polygamous mating
d. Outbred mating
c. Polygamous mating
What is dystocia?
a. Difficult birth
b. Protrusion of vaginal tissue
c. Cannibalism
d. Scruffing
a. Difficult birth
What would be a good husbandry practice with rodent dams or rabbit does with a first litter?
a. Clean the cage on a daily basis.
b. Move the newborn animals to a clean spot in the cage.
c. Handle the newborns as often as possible to get them used to human contact.
d. Delay cage changes and other husbandry tasks for a few days.
d. Delay cage changes and other husbandry tasks for a few days.
Which of the following describes a harem mating system?
a. One male is housed with two or more females, and the females are removed as they become pregnant.
b. One female is housed with two or more males, and the males are removed when the female becomes pregnant.
c. One male is housed with two or more females and the group is kept together after mating.
d. One female is housed with two males, and the group is kept together after mating.
c. One male is housed with two or more females and the group is kept together after mating.
