Natural Selection
Biology ⇒ Evolution and Diversity
Natural Selection starts at 8 and continues till grade 12.
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A population of beetles has green and brown color variants. Birds prefer to eat green beetles. Over time, the population has more brown beetles. What process is responsible for this change?
Describe how antibiotic resistance in bacteria is an example of natural selection.
Describe the difference between natural selection and artificial selection.
Describe the role of environmental factors in natural selection.
Explain how natural selection can lead to adaptation in a population.
Explain why genetic variation is important for natural selection.
A population of beetles has green and brown color variants. Birds prefer to eat green beetles. Over time, the population has more brown beetles. What process is responsible for this change?
A population of rabbits lives in a snowy environment. Over generations, more rabbits have white fur. What is the most likely explanation for this change? (1) Genetic drift (2) Natural selection (3) Artificial selection (4) Mutation only
A population of rabbits lives in a snowy environment. Over generations, more rabbits have white fur. What is the most likely explanation for this change? (1) Genetic drift (2) Natural selection (3) Artificial selection (4) Mutation only
Natural selection is a process that leads to: (1) Decrease in genetic variation (2) Evolution of species (3) Extinction of all organisms (4) No change in populations
Which of the following best describes 'survival of the fittest'? (1) The strongest individuals survive (2) The individuals best adapted to the environment survive and reproduce (3) The largest individuals survive (4) The fastest individuals survive
Which of the following is a result of natural selection? (1) Increased genetic diversity (2) Adaptation to the environment (3) Decreased reproduction (4) Random changes in allele frequency
Fill in the blank: Natural selection results in the _______ of individuals best suited to their environment.
Fill in the blank: The _______ is the observable characteristics of an organism.
Fill in the blank: The ability of an organism to survive and reproduce in its environment is called _______.
Fill in the blank: The process by which a population becomes better suited to its environment is called _______.
True or False: All mutations are beneficial to an organism.
True or False: Mutations are the only source of genetic variation in a population.
True or False: Natural selection acts on the phenotype of an organism.
True or False: Natural selection always leads to the evolution of new species.
