Question 1:
Which of the following is a mechanism of evolution that involves the random change in allele frequencies in a population over generations?
Explanation: The mechanism of evolution that involves the random change in allele frequencies in a population over generations is genetic drift. It can lead to the loss or fixation of certain alleles and has a more significant impact in smaller populations.
Question 2:
Which mechanism of evolution refers to the movement of individuals or alleles from one population to another?
Explanation: The mechanism of evolution that refers to the movement of individuals or alleles from one population to another is gene flow. It can introduce new genetic variations into a population and reduce genetic differences between populations.
Question 3:
Which mechanism of evolution involves the non-random survival and reproduction of individuals with certain heritable traits?
Explanation: The mechanism of evolution that involves the non-random survival and reproduction of individuals with certain heritable traits is natural selection. It leads to the adaptation of populations to their environments over time.
Question 4:
Which mechanism of evolution introduces new genetic variations into a population?
Explanation: The mechanism of evolution that introduces new genetic variations into a population is mutation. Mutations are the source of genetic diversity, providing raw material for other mechanisms of evolution to act upon.
Question 5:
Which mechanism of evolution is more likely to occur in a small population and can result in significant changes in allele frequencies?
Explanation: The mechanism of evolution that is more likely to occur in a small population and can result in significant changes in allele frequencies is genetic drift. In small populations, chance events can have a greater impact on the gene pool, leading to the random loss or fixation of alleles.