Unit 7 - Traits 4.10B

A family has a pet dog.  The dog has always barked at other dogs and strangers.  It loves to play fetch with a ball.  The dog once got scratched on the nose by a cat, so it now stays far away from cats.  It gets very excited when the box of dog food is shaken.  Which of these behaviors is most likely an inherited trait in dogs?  Getting excited when the box of dog food is shaken  

• Staying far away from cats    
  
•   Playing fetch  
  
•     Barking at other dogs and strangers    
  

Which trait below is inherited by a child?

• Having big feet  
• Riding a bike

Which of these is an inherited trait for a dolphin?

• Hunting for military explosive devices 
•     Pushing a newborn dolphin to the surface to breathe    

Rascal is a house cat that has never been around another cat.  When he was born, he was taken away from his parents and siblings.  When Rascal is frightened, he arches his back, his fur stands on end, and he hisses.  Which of the following best explains why the cat reacts this way?  

• The cat reacts this way naturally because it inherited the behavior.
• The cat learned to react this way from its parents and siblings.

Students are learning about inherited traits. A table of the students’ inherited traits is shown below.Which statement best summarizes the inherited traits found in the students’ class?

• Having a second toe that is longer than the big toe and having a cleft chin are not related.  
• Students who have a cleft chin were less likely to have attached earlobes.

Heredity is the passing of traits from parents to offspring.  The study of heredity is called genetics.  The study of genetics started in the 1850’s.  A partial timeline of the study of genetics is shown below.
A person studying genetics could make contributions to society in each of the following ways EXCEPT ―

• investigating a way to make people like peas
• producing disease-resistant corn plants

Every member of Amy's family can speak two languages other than English. They can speak Spanish and German.
The ability to speak more than one language is —

• a learned behavior
• given at birth

The American Black Bear is found throughout North America. With about 600,000 bears on our continent, they are a thriving species. All of the following are inherited traits of the Black Bear 
EXCEPT —

• hibernating in winter
• approaching humans to find food

A daisy is a house plant that needs a lot of sunlight. If this plant is placed near a window and not moved, it will bend toward the light.  
This is an example of —

• a random act
• an inherited trait

Two brothers are twins. They have many similar traits and are alike in many ways.
Which trait did the brothers inherit from their parents?

• Enjoy eating the same 
  foods
• Have the same hair color