Himalayan Rabbit and Environmental Influence on Genes

The video explores how an organism's traits are influenced by both genetic and environmental factors, using the Himalayan rabbit as an example. The C gene in the rabbit affects pigmentation, with enzyme activity varying based on temperature. This explains the rabbit's distinct color pattern. Experiments show that environmental conditions like temperature can alter traits, such as producing a white rabbit. Other factors like chemicals, light, food, stress, and hormones also impact gene activity, highlighting the complex interaction between genes and the environment.

What is the primary focus of the video regarding the Himalayan rabbit?

• The rabbit's lifespan

• The rabbit's diet

• The influence of genes and environment on traits

• The rabbit's habitat

What does the C gene in the Himalayan rabbit encode?

• A growth hormone

• A digestive enzyme

• A pigment enzyme

• A type of fur

At what temperature range is the enzyme encoded by the C gene most active?

• 30 to 40 degrees Celsius

• 15 to 25 degrees Celsius

• 5 to 10 degrees Celsius

• Above 35 degrees Celsius

Why is the enzyme inactive in the warmer parts of the rabbit's body?

• Due to low blood flow

• Because of high temperature

• Due to lack of oxygen

• Because of high humidity

Which parts of the rabbit's body are cooler, allowing enzyme activity?

• The chest and neck

• The tail and legs

• The ears, nose, and feet

• The back and belly

What would happen if a Himalayan rabbit is raised in an environment hotter than 30 degrees Celsius?

• It would have darker fur

• It would become a white rabbit

• It would grow larger

• It would have shorter ears

What historical experiment was conducted over a hundred years ago regarding Himalayan rabbits?

• Breeding them with other species

• Exposing them to different light conditions

• Raising them in different temperatures

• Feeding them different diets

What other environmental factor, besides temperature, can influence gene activity?

• Wind

• Altitude

• Chemicals

• Sound

How can light affect the development of a butterfly?

• By altering its wing color

• By changing its size

• By modifying its diet

• By affecting its lifespan

What is the main takeaway regarding an organism's traits?

• They are solely determined by genes

• They are unchanged by external conditions

• They are only affected by diet

• They are influenced by both genes and environmental factors