Large Animal Science Exam #2

Question 1

Identify number 1

Accepted Answer

Vulva

Question 2

The hormone that is produced by the corpus luteum on the ovary is called ____ (referred to as the “pregnancy hormone”).

Accepted Answer

progesterone

Question 3

The length of estrus or “heat” for a cow is usually ______.

Accepted Answer

18hrs

Question 4

Cows, sows and mares have a _____ uterus type.

Accepted Answer

bicornate

Question 5

The gestation length for a ewe is approximately:

Accepted Answer

147 days

Question 6

Identify number 7

Accepted Answer

Cowper's gland

Question 7

Hormone released ~day 15 of the estrous causes regression of the corpus luteum & brings the female into heat

Accepted Answer

prostaglandin

Question 8

The normal length of estrus (“heat”) for a sow is approximately ____.

Accepted Answer

60hrs

Question 9

The ______ in the hen reproductive tract is responsible for formation of the shell and shell pigment.

Accepted Answer

Uterus

Question 10

Identify number 4

Accepted Answer

Uterus

Question 11

Identify number 3

Accepted Answer

cervix

Question 12

Leydig cells housed in between the seminiferous tubules of the testes are responsible for:

Accepted Answer

Testosterone Production

Question 13

Stage of the estrous cycle-female is not receptive to the male, corpus luteum is present, and high progesterone levels.

Accepted Answer

Diestrus

Question 14

The hormone that is responsible for partial control of seasonal reproductive patterns is _____.

Accepted Answer

melatonin

Question 15

Which of the following is the term for the “yellow body”, which is active tissue that develops on the ovary?

Accepted Answer

corpus luteum

Question 16

What is the term for the intermediate state between parents or a “blending” of parental phenotypes?

Accepted Answer

Incomplete Dominance

Question 17

What breeding system mates two animals of the same breed that are unrelated?

Accepted Answer

Outcrossing

Question 18

Which hormone is produced by the anterior pituitary and triggers ovulation & development of the corpus luteum?

Accepted Answer

LH (luteinizing hormone)

Question 19

What is the term for a difficult birth?

Accepted Answer

dystocia

Question 20

The site of semen deposition during artificial insemination of cattle is ____.

Accepted Answer

uterine body

Question 21

Identify number 9

Accepted Answer

Vas Deferens

Question 22

Identify number 2

Accepted Answer

vagina

Question 23

Who was given the name “Father of the Art of Animal Breeding?”

Accepted Answer

Robert Bakewell

Question 24

Which hormone is produced by the anterior pituitary and stimulates follicle development and estrogen production?

Accepted Answer

FSH (follicle stimulating hormone)

Question 25

Which of the following is not a benefit of outbreeding?

Accepted Answer

Increased homozygosity

Question 26

Identify number 5

Accepted Answer

Ovary

Question 27

The gestation length for a mare is approximately ______.

Accepted Answer

336

Question 28

The seminiferous tubules located within the testes are responsible for the production of what?

Accepted Answer

Sperm Cells

Question 29

Identify number 11

Accepted Answer

Srotum

Question 30

Who was the founder of modern genetics?

Accepted Answer

Gregor Mendel

Question 31

Identify number 6

Accepted Answer

Oviduct

Question 32

In the mating of two heterozygous (Bb) cattle what percentage of the offspring will be red?

Accepted Answer

25%

Question 33

The _____ in the hen reproductive tract secretes thick albumen (egg white).

Accepted Answer

Magnum

Question 34

Ruminant animals have what placenta type?

Accepted Answer

cotyledonary

Question 35

The gestation length for a sow is approximately ____days.

Accepted Answer

114

Question 36

Which of the following is not a characteristic of a haploid cell?

Accepted Answer

Contains pared chromosomes

Question 37

The first milk that is produced after parturition that is high in antibodies is called ____.

Accepted Answer

colostrum

Question 38

An advantage of estrous synchronization is _____.

Accepted Answer

all are advantages

Question 39

For cattle artificial insemination, straws of semen are stored/preserved in _____.

Accepted Answer

liquid nitrogen

Question 40

If an animal has one dominant allele and one recessive allele for a given trait, they are considered

Accepted Answer

Heterozygous

Question 41

term for an increase in productivity in the crossbred progeny above the average of breeds or lines that are crossed.

Accepted Answer

Heterosis

Question 42

Why are mules a sterile species cross?

Accepted Answer

Unpaired chromosomes & not enough homology

Question 43

The hormone responsible for the stimulation of milk “letdown” is _______.

Accepted Answer

Oxytocin

Question 44

What type of inheritance involves measurable traits that are strongly influenced by the environment?

Accepted Answer

Quantitative Inheritance

Question 45

When a cow is given FSH to produce a greater than normal number of eggs, this is called:

Accepted Answer

superovulation

Question 46

Identify number 8

Accepted Answer

Prostate Gland

Question 47

What breeding system mates closely related individuals?

Accepted Answer

Inbreeding

Question 48

The first mammal to be cloned from adult cells was “Dolly”, a ____.

Accepted Answer

sheep

Question 49

Identify number 10

Accepted Answer

Epididymis

Question 50

A normal gestation length for a cow is ______ days.

Accepted Answer

285

Large Animal Science Exam #2

Questions 50

Large Animal Science Exam #2

Questions 50