BIO 151 Final Exam

What were the two main ideas in Darwin's theory of evolution?

Genetic traits and natural selection

Descent with modification and genetic traits

Descent with modification and natural selection

Genetic traits and law of independent assortment

Mendel's Law that states that a sperm or egg carries only one allele for each inherited characters because allele paris are separated from each other during production of gametes:

Law of Segregation

Law of Independent Assortment

What were the gaps that were filled in by Mendel during the Modern Synthesis?

DNA replication

Transcription Factors

Descent with Modification

Heritable Traits

What isn't a condition that is necessary for natural selection?

A large population

Population variation

Differences in reproductive success

Variation must be inherited

Which mechanism of evolutionary change occurs when a population gains or loses alleles when fertile individuals move into or out of a population or when genes are transferred?

Genetic drift

Gene flow

Nonrandom mating

Mutation

Microevolution is:

Evolution in an individual animal

Major evolutionary changes

Change in the frequency of an allele in a population

A population becoming a new species

What isn't a condition for the Hardy Weinberg equilibrium?

lots of variation in the population

Large population

No mutations

Random mating

What does directional selection do to a population?

Eliminates extremes

Creates two averages

Moves population to a new area

One extreme now has a higher fitness

Natural Selection is limited by the fact that it has to act on genes that can be inherited.

True

False

What is necessary for an evolved organism to be considered a new species under the biological species concept?

The ability for the two species to interbreed

Reproductive isolation barriers

Completely different DNA

Mutations in the regulatory portion of DNA

Which reproductive isolating mechanism happens before fertilization occurs?

Pre Zygotic Barriers

Post Zygotic Barriers

Which post zygotic barrier is when the interaction of parental genes impairs hybrids development of survival?

What is the first step in speciation?

Evolution of a reproductive isolating mechanism

Populations becoming genetically isolated

A new mutation arising in the population

Populations genetically diverging

Which type of speciation occurs in the same area?

Allopatric

Sympatric

When natural selection begins to favor any allele in the parental populations the form pre zygotic barriers which will result in separate species if hybrids are not fit?

Reinforcement

Post Zygotic Barriers

Genetic Isolation

Gene Flow

Similarity in structures due to convergent evolution are called:

Correct order of Binomial Nomenclature:

Domain, Genus, Species, Order, Family, Class, Kingdom, Phylum

Genus, Family, Species, Order, Class, Kingdom, Phylum, Domain

Genus, Species, Family, Order, Class, Phylum, Kingdom, Domain

Species, Genus, Family, Class, Order, Phylum, Kingdom, Domain

What was the significance of the Cambrian Explosion?

Development of complex organisms

Evolution of genes that control development of animal forms

Was the beginning of land animals

Signified the beginning of life

Which animal phyla is a lophotyochzoa (grows by adding to existing body)?

Mollusca

Porifera

Chordata

Anthropoda

Which germ layer develops the skin, hair and nervous system?

Endoderm

Mesoderm

Ectoderm

Coelom

BIO 151 Final Exam

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