Breeding

Question 1

an active area in the chromosome that codes for trait

Answer 1

Gene

Question 2

• a complex molecule of the chromosomes which is the coding mechanism of inheritance

Answer 2

DNA

Question 3

transmission of genes from parents to offspring

Answer 3

Inheritance

Question 4

the characteristics of an animal that can be seen or measured

Answer 4

Phenotype

Question 5

(Genotype+Environment)

Answer 5

Phenotype

Question 6

• the genetic makeup of an individual

Answer 6

Genotype

Question 7

Phenotype-Environment

Answer 7

Genotype

Question 8

Differentially producing what one wants in the herd. Allowing only certain matings to occur.

Answer 8

Selection

Question 9

when egg and sperm unite to form embryo

Answer 9

Fertilization

Question 10

an individual whose genes for a particular trait are identical or alike

Answer 10

Homozygous

Question 11

an individual who possesses unlike genes for a particular trait

Answer 11

Heterozygous

Question 12

gene that overpowers and prevents the expression of its recessive allele when the two alleles are present in a heterozygous individual

Answer 12

Dominant

Question 13

a gene that its expression is mask

Answer 13

Recessive

Question 14

in the nucleus and contain the genetic material

Answer 14

Chromosomes

Question 15

Tandem Selection

Answer 15

Selecting for one trait at a time

Question 16

Selection index

Answer 16

Rating animals by combining performance of several traits into a single value

Question 17

Independent Culling

Answer 17

Establishes minimum culling levels for each trait

Question 18

Purebred animals

Answer 18

Meets requirements of a recognized breed and whose ancestors are registered in the herdbook

Question 19

Purebred breeder

Answer 19

develop breeding stock that possess the highest predictability for transmitting the most desirable inheritance possible

Question 20

Commercial producers

Answer 20

make use of available genetic material in a manner to maximize production or give the most efficient, rapid and economical production possible

Question 21

Breed

Answer 21

Race or variety of livestock where the members are related by descent and are similar in certain distinguishable characteristics

Question 22

Inbreeding

Answer 22

Mating of related animals

Question 23

Linecrossing

Answer 23

Crossing different lines or unrelated animals of the same breed

Question 24

Line breeding

Answer 24

A mild form of inbreeding

Question 25

Heterosis

Answer 25

Production of the offspring over the average of the parents