Understanding Evolutionary Selection

The video tutorial discusses evolutionary selection, focusing on natural and artificial selection. It defines selection as the process by which traits become more or less common in a population. Natural selection requires variation, heritability, and overproduction of offspring, with nature determining survival based on trait suitability. Artificial selection involves human choice in trait propagation, commonly used in agriculture and animal breeding. The video concludes by comparing both types of selection as mechanisms of evolution.

What is the process by which inherited traits become more or less common in a population?

• Adaptation

• Selection

• Migration

• Mutation

Which of the following is NOT a criterion for natural selection?

• All offspring survive

• Trait must be heritable

• Variation in the population

• More offspring are produced than the environment can support

In the beetle example, what environmental change favored the brown beetles?

• Flooding of the habitat

• Increase in predators

• Drought causing green vegetation to die

• Introduction of a new species

What is the main difference between natural and artificial selection?

• Natural selection involves human intervention

• Artificial selection requires no variation

• Humans decide which traits are passed on in artificial selection

• Natural selection is faster than artificial selection

Which of the following is NOT a use of artificial selection?

• Allowing natural predators to control population

• Breeding cows for high milk production

• Developing drought-resistant crops

• Creating new dog breeds

Why do breeders use artificial selection in horses?

• To increase their lifespan

• To create breeds for specific jobs

• To reduce their size

• To make them immune to diseases

What is a common goal in artificial selection in agriculture?

• To increase genetic diversity

• To create new species

• To produce the best and most yield

• To eliminate all pests

How are natural and artificial selection similar?

• Both eliminate genetic variation

• Both require environmental changes

• Both are mechanisms of evolutionary selection

• Both involve human decision-making

What is the role of humans in artificial selection?

• To reduce environmental impact

• To decide which traits are desirable

• To observe natural processes

• To increase mutation rates

What is the main focus of the video tutorial?

• The comparison of natural and artificial selection

• The history of evolution

• The process of mutation

• The impact of climate change on species