Ch. 28

Question 1

What traits are determined by several genes and influenced by environment?

Answer 1

Complex traits

Question 2

How are complex traits described numerically?

Answer 2

Quantitative genetics

Question 3

What are the four types of quantitative traits?

Answer 3

1. anatomical
2. physiological
3. behavioral
4. disease

Question 4

What are traits called when they are expressed in whole number values?

Answer 4

Meristic traits

Question 5

What are examples of continuous traits in quantitative traits?

Answer 5

Height or weight

Question 6

How are quantitative traits expressed on graphs?

Answer 6

Using normal curves

Question 7

What kind of inheritance refers to transmission of traits that are governed by two or more genes?

Answer 7

Polygenetic inheritance

Question 8

What experiment concluded there are two different genes that contribute to wheat hull color

Answer 8

Nilsson-Ehle experiment

Question 9

Can a Punnett square be utilized to examine polygenetic inheritance T/F

Answer 9

False

Question 10

Why is polygenetic inheritance continuous

Answer 10

1. 3+ gene influences increases outcomes
2. more influence of environmental factors

Question 11

What is the location on a chromosome that harbors one or more genes that affect the outcome of a quantitative trait?

Answer 11

Quantitative trait locus (QTL)