Genetics - Midterm

Question 1

Heritability value (h2) for milk protein and fat %:
0.005-0.006 middle, 0.4-0.6, medium-high, 5.0-6.0 middle, 0.5-0.6 high

Answer 1

0.4-0.6, medium-high

Question 2

The 2n chromosome number of a donkey: 62, 60, 60, 52

Answer 2

62

Question 3

“S” gene locus determining the white region inheritance of domestic animals:
-roan, colored and white intennedier, studded mix, roan;
-dilutions, black to blue, red to cream, brown to purple, melanophilin, DCT, dilution;
-in white variegated horse, EDN, overo, wild color;
-white spotted, variegated, KIT, Sabino spotting

Answer 3

-white spotted, variegated, KIT, Sabino spotting

Question 4

Egg production and inheritance (h2) values for egg weight in chickens:
rg=-0.0005 rp = 0.30
rg=0.05 rp=3.30
rg= - 0.05. rp = 300
rg= - 0.05. rp = 0.30

Answer 4

rg= - 0.05. rp = 0.30

Question 5

Goat’s 2n chromosome number: 58, 64, 50, 60

Answer 5

60

Question 6

“E” locus for inheritance of the coat colour in domesticated animals;
-graying, hair bleaching, elmo
-melanocortin receptor, MC1R, red, yellow, extension
-full white, kit, goose
-merle, colorful and white intennedier, stitched blend, expressive

Answer 6

melanocortin receptor, MC1R, red, yellow, extension

Question 7

The dog’s 2n chromosome number: 76, 68, 78, 80

Answer 7

78

Question 8

Heritability value (h2) for milk yield:
-0.8-0.9 low
-0.1-0.2 low
-0.2-0.3, low
-1.1-1.2 low

Answer 8

-0.2-0.3, low

Question 9

2n chromosome number of poultry species
-cca. 78-80
-cca. 88-90
-cca. 72-76
-cca. 68-70

Answer 9

-cca. 78-80

Question 10

Inheritance value (h2) of egg production and body weight in chickens:
-rg=0.00 rp=-0.20
-rg=0.00 rp=-0.20
-rg=0.00 rp=-0.002
-rg=0.00 rp=-2

Answer 10

-rg=0.00 rp=-0.20

Question 11

Bovine 2n chromosome number: 50, 62, 56, 60

Answer 11

60

Question 12

Number of domestic species: 50, 60, 70, 40

Answer 12

50

Question 13

“W” locus for inheritance of the coat colour in domesticated animals
-white spotted, motley, KIT, spotting
-white motley horse, edn, overo, wild
-white motley lake, tobiano
-full white, kit, white

Answer 13

-full white, kit, white

Question 14

“C” locus for inheritance of the coat colour in domesticated animals
-melanocortin receptor, MC1R, red, yellow, code-R
-polymorphic albino variants: chinchilla, Himalayan, acromelic, full albino, pigment dilution
- gray, hair bleaching, canine
-full white, KIT, white, code-C

Answer 14

-polymorphic albino variants: chinchilla, Himalayan, acromelic, full albino, pigment dilution

Question 15

Genetic (rg) and phenotypic (rp) correlations in pigs: intensity of growth and feed conversion
-rg=-0.1 rp=-0.005
-rg= -0.0055 rp= -0.0045
-rg=-55 rp=-45
-rg= -0.55 rp= -0.45

Answer 15

-rg= -0.55 rp= -0.45

Question 16

The cat’s 2n chromosome number: 36, 40, 44, 38

Answer 16

36

Question 17

The 2n chromosome number of the sheep: 60, 54, 64, 50

Answer 17

54

Question 18

Specific feed utilization in beef cattle fattening:
-2-3 kg feed/1 kg live weight
-3-4 kg feed/1 kg liveweight
-2.5-3.5 kg feed/1 kg live weigh
-2-3 kg feed/1 kg live weight

Answer 18

3-4 kg feed/1 kg liveweight

Question 19

The mammalian domestic species average number of breeds
-200-700
-100-300
-80-280
-100-500

Answer 19

-100-500

Question 20

“A” locus for inheritance of the coat colour in domesticated animals:
-chinchilla albino
-wild colours, agouti
-polymorphic albino variants: color, chinchilla, himalayan, alcrornellanic, full albino
-in white motley, EDN, avero

Answer 20

-wild colours, agouti

Question 21

“G” locus for inheritance of the coat colour in domesticated animals
-full white, kit, goose
-roan color and white intennedier, stitched blend, germanium
-greying, early hair bleaching,
-wild colors, aguti

Answer 21

-greying, early hair bleaching,

Question 22

“T” gene locus determining the colour inheritance of domestic animals:
-roan color and white intennedier, studded mixing, roan
-graying, hairs bleaching, graying
-wild colors, agouti
-white in variegated lake, tobiano

Answer 22

white in variegated lake, tobiano

Question 23

Heritability value (h2) for meat production:
-0.4-0.8
-0.4-0.6
-0.89-0.9
-4.0-6.2

Answer 23

-0.4-0.6

Question 24

The horse’s 2n chromosome number: 54, 60, 64, 62

Answer 24

64

Question 25

“R” locus for inheritance of the coat colour in domesticated cattle
-in white variegated lake, tobiano
-white spotted, variegated, KIT, spotting
-color dilutions, black to blue, red to cream, brown to purple color, melanophilin, DCT, dilution
-colour and white intermediate, studded mixing, roan

Answer 25

colour and white intermediate, studded mixing, roan

Question 26

Heritability value (h2) for fertility:
-0.8- 0.9 high
-0.001- 0.002 alacsony
-0.1-0.2, low
-10-20 low

Answer 26

-0.1-0.2, low

Question 27

Genetic (rg) and phenotypic (rp) correlations in pigs: intensity of growth and intramuscular fat:
-rg=0.05 rp=0.30
-rg=0.5 rp=3
-rg=0.02 rp=0.10
-rg=5 rp=0.003

Answer 27

-rg=0.05 rp=0.30

Question 28

“O” locus for inheritance of the coat colour in domesticated animals
-white in motley horse, EDN, overo frame
-color dilutions, black to blue, red to cream, brown to purple, melanophilin, DCT, dilution
-in white motley lake, tobiano
-roan, colored and white intennedier, studded mixing, roan

Answer 28

-white in motley horse, EDN, overo frame

Question 29

Chromosome number (2n) of European pig: 48, 40, 36, 34

Answer 29

36