ANSC 4395 BREEDING & GENETICS - TEST 3
REVIEW QUESTIONS WITH VERIFIED
ANSWERS; 100% CORRECT; GRADE A
2 statistics useful for determining if a relationship exists -
correct answer- Correlation and Regression
An individual that is Aa will produce gametes - correct answer-
- Half will contain A, other half will contain a
- When populations are small, there may not be exactly half of
each
bell curve (normal distribution) - correct answer- A statistical
distribution that phenotypes will closely approximate
- Allows us to use statistics to describe populations and their
genetic makeup
bYX - correct answer- read as the regression of Y on X
Calculating the regression coefficient - correct answer- - The
numerator is the same as the numerator in the correlation
coefficient
, - The denominator is the same as the numerator of the variance
of X
- Does make a difference which variable is X and which is Y
coefficient of variation - correct answer- Standard deviation
as percentage of the mean
- Useful for comparing the relative amounts of variation for
various traits
Common characteristics of Polygenic and Simply Inherited -
correct answer- 1. Both are subject to the same Mendelian
Mechanisms: Law of Segregation and Independent Assortment
2. Affected by dominance and epistasis
3. Principles of selection and mating apply to both
- Attempt to increase frequency of desirable alleles
(More difficult to do with polygenic traits)
Continuous Variable - correct answer- for any 2 values, there
is a possible intermediate value
EX. weaning weight and yearling weight
REVIEW QUESTIONS WITH VERIFIED
ANSWERS; 100% CORRECT; GRADE A
2 statistics useful for determining if a relationship exists -
correct answer- Correlation and Regression
An individual that is Aa will produce gametes - correct answer-
- Half will contain A, other half will contain a
- When populations are small, there may not be exactly half of
each
bell curve (normal distribution) - correct answer- A statistical
distribution that phenotypes will closely approximate
- Allows us to use statistics to describe populations and their
genetic makeup
bYX - correct answer- read as the regression of Y on X
Calculating the regression coefficient - correct answer- - The
numerator is the same as the numerator in the correlation
coefficient
, - The denominator is the same as the numerator of the variance
of X
- Does make a difference which variable is X and which is Y
coefficient of variation - correct answer- Standard deviation
as percentage of the mean
- Useful for comparing the relative amounts of variation for
various traits
Common characteristics of Polygenic and Simply Inherited -
correct answer- 1. Both are subject to the same Mendelian
Mechanisms: Law of Segregation and Independent Assortment
2. Affected by dominance and epistasis
3. Principles of selection and mating apply to both
- Attempt to increase frequency of desirable alleles
(More difficult to do with polygenic traits)
Continuous Variable - correct answer- for any 2 values, there
is a possible intermediate value
EX. weaning weight and yearling weight
