Intro to Animal Reproduction Flashcards
is the transferring of embryos from one female to others for the rest of gestational period
Embryo Transfer
Involves depositing semen that has been previously collected from the male in the female to others for the rest of gestational period
Artificial insemenation
involves that crossbred female being bred to a male that is of the same breed as one of the parents of the female
backcrossing
involves using males from different breeds for several succeeding generations of females
rotational cross
involves mating a female and male from different breed
twobreed cross
involves breeding of two animals frok
different breeds
crossbreeding
results in slower overall improvement, but a marked genetic improvement is present after the first breeding
grading up
a purebred male is bred to a grade female
upgrading
purpose of outcrossing
to bring new desirable traits
breeding a male and female that are of the same breed but different pedigrees
outcrossing
used if the relationship is a close one and the animals share more than one ancestor
closebreeding
used to improve genetic purity in a breeding program by further selecting for a desirable characteristic
inbreeding
the male and female are both purebred animals and are of the same breed
purebreeding
helps to maintain a purebred stock for commercial producers
straight breeding
2 types of breeding system
straight and crossbreeding
system that determine the offspring’s breed and its relationship to other offspring and to its parents
breeding system
compare sires based on the estimated performance of their offspring
progeny tests
this type of management practice does not involve trying to analyze the genetics of an animal but rather evaluates its heritage and performance
evaluating animals
a type of scoring system
selection index
eliminates less desirable traits by removing individuals possessing those traits from breeding program
culling
involves breeding for one or two traits at the same time
tandem selection
major management practice used to improve genetics in breeding program
genetic selection
used to improve the genetic makeup of offspring, which leads to better quality animals
genetic improvement management practices
can be used to predict the relationship of dominant and recessive genes
punnet square
genetic makeup of an individual
genotype
outward physical appearance of an animals
phenotype
carries identical genes for a characteristic
homozygous
one that carries two different genes for a particular characteristic
heterozygous
lowercase is used to indicate?
recessive gene
capital letter is used to indicate a?
dominant gene
the gene of the suppressed or hidden trait is called
recessive gene
chromosome of rabbits
44
Chromosome of dogs
78
chromosome of horses
64
chromosome of sheep
54
chromosome of fowl
78
chromosome of swine and cat
38
chromosome of cattle and goat
60
the component of the gene that controls inheritance is
deoxyribonucleic acid
unit of inheritance
gene
science of inheritance
genetics