Genetics Quiz

What is heritability?

• The degree to which characteristics are determined by genetic factors

• The degree to which characteristics are determined by environmental factors

• The degree to which characteristics are determined by both genetic and environmental factors

• The degree to which characteristics are determined by random factors

What is EBV an estimate of?

• The degree of genetic influence on a characteristic

• The average weight of the offspring

• The success of a breeding program

• The environmental factors affecting a characteristic

When calculating EBV, what does the formula EPV = Winning weight - Average winning weight represent?

• The success of a breeding program

• The genetic gain of an individual

• The environmental factors affecting an individual

• The average weight of the offspring

What does a heritability value of less than 50% indicate?

• The characteristic is influenced by environmental factors

• The characteristic is influenced by genetic factors

• The characteristic is not heritable

• The characteristic is suitable for a breeding program

What is the implication of a positive EBV?

• The offspring will have a weight equal to the average

• The offspring will have a weight less than the average

• The offspring will not inherit the characteristic

• The offspring will have a weight greater than the average

When calculating EBV, what does the formula EPV = Winning weight - Average winning weight * Heritability / 100 represent?

• The expected genetic gain of the offspring

• The success of a breeding program

• The average weight of the offspring

• The environmental factors affecting the offspring

What is the importance of EBV in genetics?

• Indicating the heritability of a characteristic and predicting the success of a breeding program

• Determining the environmental factors affecting a characteristic

• Calculating the average weight of the offspring

• Selecting the best breeding program

What does a heritability value of more than 50% indicate?

• The characteristic is suitable for a breeding program

• The characteristic is not heritable

• The characteristic is influenced by environmental factors

• The characteristic is influenced by genetic factors

What is the expected genetic gain of the offspring if the combined EPVs of the parents are 1.6 and the heritability is 60%?

• 1.6 kg

• 4.3 kg

• 2.1 kg

• 0.96 kg

What does the formula EPV = Winning weight - Average winning weight * Heritability / 100 represent in genetics?

• Predicting the environmental factors affecting the offspring

• Calculating the expected genetic gain of the offspring

• Determining the average weight of the offspring

• Selecting the best breeding program