NEL The Basis of Heredity 597
Figure 1
Bobby Hull and Brett Hull starred in the National Hockey League
and were the first father and son to win the Hart Trophy.Figure 2
The father of former prime minister Paul Martin
was also a federal politician.Figure 3
Keifer and Donald Sutherland have successful
acting careers.Exploration Similarities and Differences
Look at the people shown in Figure 1, Figure 2, and Figure 3.
Identify any traits, such as eye colour, eye shape, face shape,
and nose length and width, that show a family resemblance.
Consider the information in the captions.- Organize the traits in a chart or table.
- Identify the traits that you think are inherited.
(a) Describe the criteria you used to decide that a trait was
inherited.
(b) Brett Hull is one of the NHL’s all-time goal scorers. Do you
think Brett inherited the ability to score goals from his
father, Bobby Hull (Figure 1), or is this a skill he learned?
Give reasons for your answer.