Quantitative genetics

What are polygenic traits?

• Traits determined by a single gene

• Traits determined by more than one gene

• Traits that are not influenced by genes

• Traits that are only influenced by environmental factors

Which of the following is an example of a quantitative trait?

• Eye color

• Blood type

• Height

• Hair texture

What are continuous traits?

• Traits that can be counted and expressed in whole numbers

• Traits that do not fall into discrete categories

• Traits that show a genetic predisposition

• Traits that are determined by a single gene

Which category of complex traits can be counted and expressed in whole numbers?

• Continuous traits

• Meristic traits

• Threshold traits

• Polygenic traits

Which of the following best describes a frequency distribution?

• A method to calculate the average of a dataset

• A representation of data showing how often each value occurs

• A technique to find the median of a dataset

• A way to determine the mode of a dataset

What shape does a normal distribution typically have?

• Square

• Triangular

• Bell-shaped

• Rectangular

Which term refers to the average value in a dataset?

• Variance

• Mean

• Standard deviation

• Covariance

What is the purpose of calculating standard deviation?

• To find the average value

• To measure the spread of data points

• To determine the mode

• To calculate the median

What is the standard deviation a measure of?

• The average value in a dataset

• The amount of variation in a group

• The median value in a dataset

• The mode of a dataset

In a normal distribution, what percentage of observations fall within 1 standard deviation from the mean?

• 50%

• 68%

• 95.5%

• 99.7%