Chapter 2 Multiple Choice Questions

. Mitochondrial DNA is…

inherited from the father through the sperm.

inherited from the mother through the egg.

inherited from both the father and mother.

produced by replicating sections of nuclear DNA.

. An endemic species is…

only found in a specific location.

almost indistinguishable from another species.

a species found over a very wide geographical area.

a species which lives inside the organisms of another species.

. A molecular clock can be used to…

calculate the age of a gene.

measure variation at a particular gene locus.

estimate the time elapsed between two species separating.

measure the length of time a species has lived in a particular location.

. There is more variability in the alleles of a species at location X than in a similar species at location Y. This is evidence of…

sympatric speciation.

X and Y being cryptic species.

the founder effect in location X.

the founder effect in location Y.

. Our system of classification is based on the work of…

Aristotle.

Linnaeus.

Lamarck.

Darwin.

. Which one of the following is an example of post-zygotic reproductive isolation?

A donkey mates with a horse to produce a sterile mule.

Two species of toad have different mating seasons.

Pollen grains from one species will grow pollen tubes only into the styles of the same species.

Female fireflies are only attracted to males which make a particular, species-specific, flashing sequence.

. What part does a monograph play in the discovery of a new species?

It is part of the DNA profiling process.

It is an article which describes the new species in minute detail.

It is used to make diagrams which other scientists can examine.

It is a drawing of the clade to which the new species belongs.

. Photosynthesis evolved approximately how long ago?

4.25 billion years

3.5 billion years

1.5 billion years

0.5 billion years

. The five major extinction events so far have been…

Ordovician, Devonian, Permian, Triassic, Cretaceous.

Cambrian, Ordovician, Silurian, Jurassic, Paleocene.

Cambrian, Silurian, Triassic, Jurassic, Paleocene.

Ordovician, Devonian, Carboniferous, Permian, Cretaceous.

. Which mass extinction accompanied the splitting of the supercontinent Pangaea?

Ordovician

Devonian

Permian

Triassic

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