Exploring Altruism and Kin Selection in Natural Selection

What is the primary mechanism by which biological evolution operates as discussed in the video?

• Gene flow

• Genetic drift

• Natural selection

• Mutation

Which behavior is described as helping others at one's own expense?

• Symbiosis

• Altruism

• Competition

• Predation

Who proposed the concept that altruistic behaviors can evolve among kin?

• Richard Dawkins

• Charles Darwin

• Gregor Mendel

• William Hamilton

What is the main benefit of altruistic behaviors according to kin selection theory?

• Immediate survival

• Reproductive success of kin

• Acquiring more resources

• Avoiding predators

In ant colonies, what percentage of their DNA do sister ants share?

• 25%

• 100%

• 75%

• 50%

What is the reproductive role of the queen ant in an ant colony?

• Foraging for food

• Protecting the colony

• The only reproducing individual

• Assisting in nest building

According to Hamilton's Rule, what condition must be met for altruistic behavior to evolve?

• Benefit must outweigh cost

• Benefit must equal cost

• No cost involved

• Cost must outweigh benefit

What does the 'r' in the equation b>c/r represent?

• Reproductive rate

• Resource availability

• Relationship coefficient

• Risk factor

What hypothesis explains the extension of life after reproduction in females?

• Aging hypothesis

• Kin selection hypothesis

• Grandmother hypothesis

• Altruism hypothesis

In cooperatively breeding species, what role do 'helpers' play?

• They help in finding food

• They assist in caring for siblings

• They lead the group

• They compete for resources