Midterm

Question 1

Second tool for genetic change

Answer 1

Mating/Breeding System

Question 2

a process that
determines which selected males are bred to which
selected females

Answer 2

Mating/Breeding System

Question 3

this is when you choose the group of animals you
want to be parents

Answer 3

selection

Question 4

In this, you match the males
and females from the selected group.

Answer 4

Mating

Question 5

What are the reasons for using mating systems

Answer 5

• Produce offspring with extreme
  breeding values in order to increase
  genetic change
• Make use of complementarity
• Obtain hybrid vigor or heterosis

Question 6

is the mating of related animals that results to an increased homozygosity of gene pairs compared to non- inbred animals in the same population

Answer 6

Inbreeding

Question 7

in this type of animal breeding, the animals being mated are very closely related and can be traced back to
more than one common ancestor

Answer 7

Intensive Inbreeding/ Close Breeding-

Question 8

matings of animals that are more
distantly related and can be traced back to one
common ancestor

Answer 8

Linebreeding

Question 9

mating of animals not as closely
related as the average of the population

Answer 9

Outbreeding

Question 10

Crossing of animals of
different species

Answer 10

Species-cross

Question 11

example of species-cross

Answer 11

horsexdonkey= mule

Question 12

mating of animals of
different established breeds.

Answer 12

Crossbreeding-

Question 13

example of crossbreeding

Answer 13

hampshire X berkshire

Question 14

mating of animals of
different families within the same breed

Answer 14

outcrossing

Question 15

mating of purebred
sires to commercial grade females and their
female offspring for several generations

Answer 15

Grading up

Question 16

Is any animal not eligible for registry

Answer 16

Grading Up

Question 17

this is crossing of 2 or more
inbred lines or strains (families within a breed)

Answer 17

Line or strain cross

Question 18

involves mating a selected
number of males to a group of females within a herd or flock

Answer 18

Random Mating

Question 19

where does the word oestrus cycle derived from

Answer 19

Latin

Question 20

where does the word oestrus cycle originally came from

Answer 20

Greek

Question 21

it comprises the recurring physiologic changes that are induced by reproductive hormones in most mammalian placental females

Answer 21

estrous cycle

Question 22

what starts after puberty in sexually mature females?

Answer 22

oestrus cycle

Question 23

this is interrupted by anestrous phases or pregnancies

Answer 23

estrous cycle

Question 24

typically estrous cycle continue until_____

Answer 24

death

Question 25

this may display bloody vaginal discharge

Answer 25

estrous cycle

Question 26

this is often mistake for menstruation

Answer 26

oestrus cycle