Genética y comportamiento

In 1959, Siberian scientists conducted breeding experiments with silver foxes to study the impact of selective breeding on behavior. One experiment aimed to tame foxes by breeding the meekest individuals, resulting in domesticated foxes over generations. Another experiment focused on maintaining aggression, revealing that behavior differences are genetic. Embryo transplants confirmed that aggression is genetically inherited. These studies highlight how selective breeding influences both physical and behavioral traits.

What was the primary goal of the first experiment conducted by Siberian scientists in 1959?

• To increase the size of silver foxes

• To change the color of foxes' fur

• To make foxes more aggressive

• To see if foxes could be tamed through selective breeding

What significant change was observed in the eighth generation of selectively bred foxes?

• They became more aggressive

• They became nocturnal

• They developed new fur patterns

• They began to seek human contact and show affection

What was the focus of the second experiment involving aggressive foxes?

• To maintain their aggressive nature

• To change their diet

• To make them more tame

• To increase their size

What did the scientists discover about the genetic basis of behavior in foxes?

• Behavior is regulated by a single gene

• Behavior is not influenced by genetics

• Behavioral differences are genetic

• Behavior is solely influenced by the environment

What did the embryo transplantation experiment reveal about aggression in foxes?

• Aggression can be easily changed

• Aggression is not passed to the next generation

• Aggression is genetically maintained

• Aggression is influenced by diet