Unit 4, AOS 2 - Genetic changes in a population over time

A gene pool consists of

• all of the genes, including all the different alleles, that are present in a population

• some of the genes, including the different alleles, that are present in a population

• all of the genes that are present in all populations

• all of the genes, including all the different alleles, that are present in all populations

The number of times a particular allele appears in a gene pool is known as the

• population of the allele

• relative percentage of the allele

• frequency of the allele

• evolution of the allele

Evolution can be defined as a ____________

• change in the frequency of an allele in a population over time

• change in the frequency of reproduction in a population

• change in the frequency of an allele in an individual

Which of the following is NOT true about evolution?

• Natural selection makes it happen

• It happens equally across all species

• Some individuals have a higher frequency than others

Genetic drift is change in the allele frequency of a population due to...

• random chance
• natural selection
• non-random mating (sexual selection)
• artificial selection

This mechanism of evolution occurs when populations migrate.

• Extinction
• Gene flow
• Genetic drift
• Natural Selection

What is the name of the process in which the most favorable traits are passed onto the next generation?

• Genetic drift
• Gene pool
• Gene flow
• Natural selection

What is this an example of?

• diversity of species
• variation
• vestigial structures
• DNA studies

Which type of mutation occurs when there is an addition or removal of a base?

• missense mutation

• nonsense mutation

• frameshift mutation

• point mutation

What type of mutation is shown in the diagram?

• Point mutation - missense

• Frameshift Mutation - deletion

• Frameshift Mutation - addition

• Point mutation - nonsense