ANSC 4395 Simply-Inherited and
Polygenic Traits; Basic Statistics for
Animal Breeding Exam Questions and
Answers with Verified Solutions | Latest
Updated 2026
- traits affected by only a few Simply-Inherited Traits
genes-qualitative or
categorical-rarely
quantitative-typically not
affected by the environment
- affected by many genes with Polygenic Traits
no gene having an overriding
influence-typically quantitative
or continuous in
expression-greatly influenced
by the environment
polygenic traits that have Threshold Traits
categorical phenotypes
- typically, polygenic Which are more important?
traits-traits that determine
productivity & profitability
- matings designed to reveal Test Matings
the genotype of an individual
for a small number of
loci-simply-inherited traits
, 1) mating to recessives 2) 3 general types of test matings to
mating to heterozygots 3) determine if an individual is
mating a sire to his daughters heterozygous:
mating to recessives the method with the highest
probability of detection:
- measured on a numerical Quantitative
scale-under the influence of
many genes and the
environment-express a
continuous distribution from
one extreme to the other-no
discreet phenotypic classes
like qualitative traits
- phenotypes will closely "normal" distribution or "bell curve"
approximate a statistical
distribution-allows us to use
statistics to describe
populations and their genetic
makeup
estimate of a parameter Statistic
a value that describes a Parameter
population
all the members of a group Population
- subset of a population-can Sample
seldom measure all the
members of a population
Polygenic Traits; Basic Statistics for
Animal Breeding Exam Questions and
Answers with Verified Solutions | Latest
Updated 2026
- traits affected by only a few Simply-Inherited Traits
genes-qualitative or
categorical-rarely
quantitative-typically not
affected by the environment
- affected by many genes with Polygenic Traits
no gene having an overriding
influence-typically quantitative
or continuous in
expression-greatly influenced
by the environment
polygenic traits that have Threshold Traits
categorical phenotypes
- typically, polygenic Which are more important?
traits-traits that determine
productivity & profitability
- matings designed to reveal Test Matings
the genotype of an individual
for a small number of
loci-simply-inherited traits
, 1) mating to recessives 2) 3 general types of test matings to
mating to heterozygots 3) determine if an individual is
mating a sire to his daughters heterozygous:
mating to recessives the method with the highest
probability of detection:
- measured on a numerical Quantitative
scale-under the influence of
many genes and the
environment-express a
continuous distribution from
one extreme to the other-no
discreet phenotypic classes
like qualitative traits
- phenotypes will closely "normal" distribution or "bell curve"
approximate a statistical
distribution-allows us to use
statistics to describe
populations and their genetic
makeup
estimate of a parameter Statistic
a value that describes a Parameter
population
all the members of a group Population
- subset of a population-can Sample
seldom measure all the
members of a population
