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Exam 1: Science of Zoology and Evolution of Animal Diversity

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Question 1

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The fossil record is biased because preservation is selective.

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Question 2

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Geographic barriers and reproductive barriers are basically the same thing because geographic barriers will separate two populations,prevent gene exchange,and are a precondition for speciation.

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Recurring mutation is the ultimate source of variation in natural populations,but it is usually not sufficient by itself to promote significant evolutionary change.

The methods for dating geological formations are based on a process known as ____________.

Selection for particular biological traits through their utility in permitting species to survive mass extinction is called ______________.

The evolution of ecologically diverse species from a common ancestral stock is called _________________.

In many human populations,genetically recessive traits may be very common.

Geological time may be broken down into eons,eras,periods and _______________.

To date,the greatest mass extinction was the ___________________ extinction.

The Precambrian era of geological time represents 85% of all geological time and contains most of the known fossils of large animals.

Macroevolutionary studies address large-scale changes in the frequencies of different allelic forms of genes in natural populations.

Which of the following scientists was most important in transforming Darwin's theory from its initial formulation to what we now call neo-Darwinism?

Certain fossils are very indicative of the geological period in which they occurred.These are referred to as index or _______________ fossils.

Haeckel's theory that ontogeny recapitulates phylogeny suggests that early development features were more widely shared among different animal groups than later features.

The most direct evidence for Darwin's theory of perpetual change is the fossil record.

Inbreeding tends to decrease the probability that rare recessive traits will be seen in the following population.

An example of industrial _____________ is the natural selection seen in the peppered moth of England.

In the formula,p + q = 1

Darwin's finches represent a good example of

Which of the following was a common early criticism of Darwin's theory of natural selection?