Unit 8 Evolution

What is another name for natural selection?

• survival of the smartest
• survival of the fastest
• survival of the biggest
• survival of the fittest

When the DNA of an organism is altered it is referred to as…

• Mutation
• Gene Flow
• Genetic Drift
• Sexual Selection

Inherited trait that helps an organism survive is a(n) __________.

• Fossil
• Adaptation
• Ancestor
• Natural selection

A remnant or trace of an organism from the past is called a _______.

• Ancestor
• Skeleton
• Fossil
• Imprints

All rabbits living in a particular area and compete for resources would be an example of a(n)

• population

• species

• fossil

• individual organism

The difference in the physical traits of an individual from those of other individuals in a group is called a(n)

• change
• adaption
• species
• variation

Which of the following is a fossil?

• a plant that has recently died
• a group of organisms that can reproduce
• a structure or organ that no longer functions
• a trace of an organisms that existed in the past

Genetic variation can arise from a random change in the DNA of a gene.  This change is called a(n)

• mutation
• gene flow
• gene pool
• allele

Mutations are important because they bring about

• death of the organism in which they develop
• genetic variation needed for a population to evolve
• benefits for the individual, not for the population
• Hardey-Weinberg equilibrium within a population

Asexual reproduction produces offspring with

• half of a single parent's genes
• the same genes as the parent
• a mix of genes from two parents
• lots of genetic variation