Ansc 3319 - Exam 4 Questions And
Answers With Verified Solutions Already
Passed!!! Latest Updated 2024
T/F: Heterosis may be maintained in a herd at a fixed value for several generations
by mating individuals with the highest degree of heterosis - ANSWER✔✔false
T/F: Crossbreeding purebred animals in a 3 breed terminal cross is a way to
maximize heterosis - ANSWER✔✔true
T/F: Crossing ability is improved when parent crosses are inferior for additive
genes, heritable traits, and heterosis. - ANSWER✔✔false
T/F: Some lines give more heterosis than others - ANSWER✔✔true
T/F: Mating systems are a way to control the recombination of genes in a
population by the assignment of mates. - ANSWER✔✔true
Genotype AABBCCDD can only produce which gametes? - ANSWER✔✔ABCD
Genotype AaBbCcDd can produces gametes with how many possible
combinations? - ANSWER✔✔16
In the equation, Heterosis = F1 - MPV / MPV, MPV stands for ... -
ANSWER✔✔mean parent value
, The average litter size for breed A is 7 pigs, 8 pigs for breed B, and 8.5 pigs for F1
litters. What is the percent heterosis demonstrated by the F1 pigs? -
ANSWER✔✔13.333%
Which of the following is NOT a factor when making whole herd decisions? -
ANSWER✔✔products may be produced inefficiently, as long as the product is
maximized
Good producers ... - ANSWER✔✔provides accurate, non-biased data to update
national breed trends updated
All of these may provide a source of data bias, except ... - ANSWER✔✔complete
records
The weaning weight ratio is adjusted to how many days? - ANSWER✔✔205
What step for breeding does one use to define their target for their production
system? - ANSWER✔✔identify goals
_______ crosses are the first generation produced from a two breed cross -
ANSWER✔✔F1
A _______________ is how producers begin a rotational system, breeding an F1
female back to one of her two parent breeds. - ANSWER✔✔backcross
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