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Flashcards in Exam 2 Deck (47)
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1

2 Breed specific AxB

Individual HV: 100%
Maternal HV: 0%
Complementarity: full
Replacement females: no
Management Difficulty: low
Uniformity of Progeny: high

2

3 breed specific C x AB

Individual HV: 100%
Maternal HV: 100%
Complementarity: full
Replacement females: no
Management Difficulty: low
Uniformity of Progeny: high

3

Backcross

Individual HV: 50%
Maternal HV: 100%
Complementarity: some
Replacement females: no
Management Difficulty: low
Uniformity of Progeny: high

4

2 breed rotation

Individual HV: 67%
Maternal HV: 67%
Complementarity: none
Replacement females: yes
Management Difficulty: medium
Uniformity of Progeny: low

5

3 breed rotation

Individual HV: 86%
Maternal HV: 86%
Complementarity: none
Replacement females: yes
Management Difficulty: high
Uniformity of Progeny: low

6

Composite ⅜ A - ⅝ B

Individual HV: variable 40-80%
Maternal HV: variable 40-80%
Complementarity: none
Replacement females: yes
Management Difficulty: low
Uniformity of Progeny: high

7

3 breed rotaterminal

Individual HV: 100%
Maternal HV: 67%
Complementarity: full
Replacement females: yes
Management Difficulty: high
Uniformity of Progeny: medium

8

Half sib mating

R= .25
F=.125

9

Full sib mating

R= .5
F= .25

10

Sire x Daughter mating

R= .5
F= .25

11

Inbreeding

The mating of relatives

12

Common ancestor

An ancestor common to more than one individual

13

Prepotency

The ability of an individual to produce progeny whose performance is especially is especially like its own and or is especially uniform

14

Inbreeding depression

The reverse of hybrid vigor- a decrease i the performance of inbreds, most noticeably in traits like fertility and survivability

15

Hybrid vigor

An increase in the performance of hybrids over that of purebreds, most noticeably in traits like fertility and survivability

16

Fitness trait

The ability of an individual and its corresponding phenotype and genotype to contribute offspring to the next generation

17

Inbreeding coefficient

A measure of the level of inbreeding in an individual

18

Identical by decent

Two genes are identical by descent if they are copies of a single ancestral gene

19

Alike in state

Genes that are alike in state function the same and have exactly or almost exactly the same chemical structure

20

Wright's Coefficient

A measure of pedigree relationship

21

Base population

The population of animals whose parents are either unknown or ignored for the purposes of inbreeding or relationship calculation

22

Linebreeding

The mating of individuals within a particular line, designed to maintain a substantial degree of relationship to a highly regarded ancestor or group of ancestors without causing high levels of inbreeding

23

Pure breeding

The mating of purebreds of the same breed

24

Outbreeding

The mating of unrelated individuals

25

Individual hybrid vigor

Hybrid vigor for the direct component of a trait

26

Maternal Hybrid Vigor

Hybrid vigor for the maternal component of a trait

27

Paternal Hybrid Vigor

Hybrid vigor paternal component of a trait

28

F1 Hybrid Vigor

Amount of HV obtainable in the first cross individuals; maximum hybrid vigor

29

Retained hybrid vigor

Hybrid vigor remaining in later generations of hybrids

30

Recombination loss

A loss in gene combination value caused by the gradual breaking up of favorable epistatic blocks of linked loci in advanced generations of certain hybrids