ANSC 4395 Exam 3 Questions And
Verified Answers
\Q\.Simply-Inherited Traits - ANSWERS✔-- traits affected by only a few genes
- qualitative or categorical
- rarely quantitative
- typically not affected by the environment
\Q\.Polygenic Traits - ANSWERS✔-- affected by many genes with no gene having an overriding
influence
- typically quantitative or continuous in expression
- greatly influenced by the environment
\Q\.Threshold Traits - ANSWERS✔-polygenic traits that have categorical phenotypes
\Q\.Which are more important? - ANSWERS✔-- typically, polygenic traits
- traits that determine productivity & profitability
\Q\.Test Matings - ANSWERS✔-- matings designed to reveal the genotype of an individual for a
small number of loci
- simply-inherited traits
\Q\.3 general types of test matings to determine if an individual is heterozygous: - ANSWERS✔-
1) mating to recessives
2) mating to heterozygots
, 3) mating a sire to his daughters
\Q\.the method with the highest probability of detection: - ANSWERS✔-mating to recessives
\Q\.Quantitative - ANSWERS✔-- measured on a numerical 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
\Q\."normal" distribution or "bell curve" - ANSWERS✔-- phenotypes will closely approximate a
statistical distribution
- allows us to use statistics to describe populations and their genetic makeup
\Q\.Statistic - ANSWERS✔-estimate of a parameter
\Q\.Parameter - ANSWERS✔-a value that describes a population
\Q\.Population - ANSWERS✔-all the members of a group
\Q\.Sample - ANSWERS✔-- subset of a population
- can seldom measure all the members of a population
\Q\.Variables - ANSWERS✔-whatever trait is measured on a group of individuals
\Q\.2 types of variables: - ANSWERS✔-1) discrete
2) continuous
Verified Answers
\Q\.Simply-Inherited Traits - ANSWERS✔-- traits affected by only a few genes
- qualitative or categorical
- rarely quantitative
- typically not affected by the environment
\Q\.Polygenic Traits - ANSWERS✔-- affected by many genes with no gene having an overriding
influence
- typically quantitative or continuous in expression
- greatly influenced by the environment
\Q\.Threshold Traits - ANSWERS✔-polygenic traits that have categorical phenotypes
\Q\.Which are more important? - ANSWERS✔-- typically, polygenic traits
- traits that determine productivity & profitability
\Q\.Test Matings - ANSWERS✔-- matings designed to reveal the genotype of an individual for a
small number of loci
- simply-inherited traits
\Q\.3 general types of test matings to determine if an individual is heterozygous: - ANSWERS✔-
1) mating to recessives
2) mating to heterozygots
, 3) mating a sire to his daughters
\Q\.the method with the highest probability of detection: - ANSWERS✔-mating to recessives
\Q\.Quantitative - ANSWERS✔-- measured on a numerical 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
\Q\."normal" distribution or "bell curve" - ANSWERS✔-- phenotypes will closely approximate a
statistical distribution
- allows us to use statistics to describe populations and their genetic makeup
\Q\.Statistic - ANSWERS✔-estimate of a parameter
\Q\.Parameter - ANSWERS✔-a value that describes a population
\Q\.Population - ANSWERS✔-all the members of a group
\Q\.Sample - ANSWERS✔-- subset of a population
- can seldom measure all the members of a population
\Q\.Variables - ANSWERS✔-whatever trait is measured on a group of individuals
\Q\.2 types of variables: - ANSWERS✔-1) discrete
2) continuous
