week 12

Define evolution

• Evolution is driven by mutations

• Evolution is driven by natural selection

• Evolution is the change in allele frequency in a population over time

How do you calculate allele frequency?

• By counting the number of chromosomes in a population
• By dividing the number of alleles by the number of chromosomes
• (number of copies of the allele in a population) / (total number of alleles in the population)

• By taking the square root of the total number of alleles in the population

What does it mean when a population is in equilibrium?

• Population in equilibrium means that the birth rate is higher than the death rate, resulting in a growing population size.
• Population in equilibrium means that allele frequencies are not changing and evolution is not occurring

• Population in equilibrium means that the birth rate is lower than the death rate, resulting in a declining population size.
• Population in equilibrium means that the population size is constantly changing due to external factors.

In evolutionary terms, what does fitness mean?

• Fitness refers to an organism's ability to perform physical activities
• Fitness is a measure of an organism's intelligence
• Fitness is determined by an organism's size and weight
• Fitness in evolutionary terms refers to an organism's ability to survive and reproduce in its environment.

In evolutionary terms, what does fixation mean?

• Fixation is the change from having 2 or more alleles for a particular gene to having only 1 allele for that gene

• Fixation means the elimination of all genetic variations in a population
• Fixation is the process of introducing new alleles into a population
• Fixation refers to the process of repairing genetic mutations in a population

What is Hardy Weinberg Equilibrium?

• Hardy Weinberg Equilibrium is a principle stating that the genetic variation in a population will increase from one generation to the next
• Hardy Weinberg Equilibrium is a principle stating that the genetic variation in a population will decrease from one generation to the next
• Hardy Weinberg Equilibrium is a principle stating that the genetic variation in a population will fluctuate randomly from one generation to the next
• Hardy Weinberg Equilibrium is a principle stating that the genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors.

What are the four mechanisms of evolution?

• Inheritance, variation, selection, time
• The four mechanisms of evolution are mutation, gene flow, genetic drift, and natural selection.
• Competition, cooperation, predation, symbiosis
• Mutation, adaptation, extinction, migration

In evolutionary terms, what are the sources of genetic variation?

• Environmental factors, genetic drift

• Genetic drift, mutation

• Natural selection, gene flow

• Mutation, gene flow.

What is genetic drift?

• Genetic drift is the result of natural selection
• Genetic drift is caused by deliberate human intervention
• Genetic drift only occurs in large populations
• Genetic drift is the change in the frequency of a gene variant in a population due to random chance events.

What is gene flow?

• Gene flow is the transfer of genetic material from one population to another.
• Gene flow is the transfer of genetic material from a population to an inanimate object
• Gene flow is the process of creating new genes through mutation
• Gene flow is the movement of physical genes within a cell