Evolution and Ecology

Natural selection acts ________.

• on heterozygous genotypes

• only on recessive alleles

• on phenotypes that are expressed

• on all mutations

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Gene flow describes the ________.

• movement of genes from one generation to the next

• movement of genes from one population to another

• exchange of genes during recombination

• movement of genes within a population because of interbreeding

The dolphin and the shark are similar because they have

Both adapted to a marine (ocean) environment and they both have a similar body shape but they do not share a recent common ancestor. This is known as ___________.

• coevolution

• ancestral breeding

• artificial selection

• convergent evolution

A ____________________ is a mistake in the DNA which can lead to an increase in the genetic variation in a population.

• mutation

• vestigial structure

• coevolution

• gradualism

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The reduced functionless hind leg bones in some whale species and the wings of the flightless bird called the Kiwi are

both an example of _____________________.

• vestigial structure

• bottleneck

• allopatric speciation

• genetic drift

Some moth and flower species have evolved so that they depend on each other in a relationship in which they both

benefit, this is called _________________.

• gradualism

• Archaeopteryx

• bottleneck

• coevolution

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Where the better adapted organisms survive to pass traits along to offspring.

• Evolution
• Natural Selection
• Extinction
• Artifical Selection

When every organism of a species has died.

• Evolution
• Natural Selection
• Extinction
• Artificial Selection

Green plants are

• producers
• consumers
• herbivores
• omnivores

A living relationship between two species in which one organism is harmed is called...

• mutualism
• commensalism
• parasitism
• niche