ALAT Animal Health and Biology Questions and Answers

Question 1

A research protocol requires creating a genetically uniform strain of mice by mating siblings for 20 or more generations. What is this type of breeding scheme called?

Accepted Answer

Inbreeding

Answer

Outbreeding

Answer

Crossbreeding

Answer

Random breeding

Question 2

What is the typical gestation period for a common laboratory mouse (Mus musculus)?

Accepted Answer

19-21 days

Answer

10-12 days

Answer

30-33 days

Answer

60-65 days

Question 3

Which of the following terms refers to the act of giving birth in mammals?

Accepted Answer

Parturition

Answer

Dystocia

Answer

Weaning

Answer

Anogenital

Question 4

An ALAT observes a guinea pig that is drooling, having difficulty eating, and losing weight. The front incisors appear overly long. What is the most likely health issue?

Accepted Answer

Malocclusion

Answer

Scurvy

Answer

Alopecia

Answer

Pododermatitis

Question 5

A necropsy is being performed on a rat (Rattus norvegicus). Which of the following organs, commonly found in other mammals, will be absent?

Accepted Answer

Gallbladder

Answer

Spleen

Answer

Cecum

Answer

Adrenal gland

Question 6

Which of the following is a permanent method of animal identification commonly used for rodents?

Accepted Answer

Ear tagging

Answer

Fur dye

Answer

Cage card

Answer

Marker on the tail

A research protocol requires creating a genetically uniform strain of mice by mating siblings for 20 or more generations.What is this type of breeding scheme called?

A research protocol requires creating a genetically uniform strain of mice by mating siblings for 20 or more generations.
What is this type of breeding scheme called?