ALAT Breeding and Reproduction Questions and Answers

Question 1

When determining the sex of neonatal mice, what is the most reliable anatomical comparison to make?

Accepted Answer

The anogenital distance

Answer

The overall body size

Answer

The visibility of nipples

Answer

The length of the tail

Question 2

A research colony manager wants to maintain maximum genetic diversity and vigor in a mouse colony. Which breeding scheme should be implemented?

Accepted Answer

Outbreeding

Answer

Inbreeding

Answer

Backcrossing

Answer

Test crossing

Question 3

An ALAT is caring for a pregnant doe (female rabbit). What is the typical gestation period the technician should expect for this animal?

Accepted Answer

30-33 days

Answer

19-22 days

Answer

44-48 days

Answer

58-63 days

Question 4

Which of the following terms describes the period when a female animal is sexually receptive and will permit mating?

Accepted Answer

Estrus

Answer

Parturition

Answer

Gestation

Answer

Anestrus

Question 5

A technician is setting up breeding cages for mice using a polygynous system. Which of the following housing arrangements is correct for this system?

Accepted Answer

One male housed with two or more females

Answer

One male and one female housed together as a pair

Answer

Multiple males housed with a single female

Answer

Multiple males and multiple females housed in a large group

Question 6

What is the term for the process of separating young animals from their mother and transitioning them from a diet of milk to solid food?

Accepted Answer

Weaning

Answer

Fostering

Answer

Culling

Answer

Gestation