Mechanisms of Evolutionary Change
Biology ⇒ Evolution and Diversity
Mechanisms of Evolutionary Change starts at 10 and continues till grade 12.
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See sample questions for grade 10
A population of 100 birds has 60 with allele A and 40 with allele a. If 10 birds with allele a migrate to another population, what mechanism of evolution is this?
A population of beetles is mostly green, but a few are brown. After a flood, only brown beetles survive. What mechanism of evolution is this an example of?
A population of plants is exposed to a new herbicide. Over time, only those with a rare resistant allele survive and reproduce. What type of selection is this?
A population of rabbits has 60% white fur allele (W) and 40% black fur allele (w). If a disease randomly kills half the population, and the surviving group has 80% W and 20% w, what mechanism of evolution has occurred?
A scientist observes that a population of insects has developed resistance to a pesticide over several generations. Which mechanism of evolution is most likely responsible?
Describe how a population bottleneck can affect the future evolution of a species.
Describe how gene flow can prevent speciation.
Describe how genetic drift can lead to the loss of alleles in a population.
Describe the difference between genetic drift and natural selection.
Explain how mutations contribute to evolution.
Explain the bottleneck effect and its impact on genetic diversity.
Explain the difference between the bottleneck effect and the founder effect.
Explain why small populations are more affected by genetic drift than large populations.
