Which of the following is the correct order of the taxonomic classification system from most inclusive to most specific?

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

a. Kingdom, Phylum, Class, Order, Family, Genus, Species

c. Species, Genus, Family, Order, Class, Phylum, Kingdom

d. Phylum, Kingdom, Class, Order, Family, Genus, Species

What is the main reason that natural selection cannot create a "perfect" organism?

It can only act on existing variations.

Adaptations are often trade-offs.

Populations are limited by their ancestral anatomy.

A postzygotic barrier is a mechanism that prevents successful reproduction after a zygote has formed. Which of the following is an example of a postzygotic barrier?

Reduced hybrid fertility (e.g., a sterile mule)

Temporal isolation (different mating seasons)

Behavioral isolation (different mating rituals)

Gametic isolation (sperm unable to fertilize egg)

What is the purpose of the endosperm in an angiosperm seed?

It serves as a food reserve for the embryo

It becomes the new plant's first leaf.

It forms the protective seed coat.

What is the difference between microevolution and macroevolution?

Microevolution is the change of a population over time, while macroevolution is the process that gives rise to new species and higher taxonomic groups with widely divergent characters.

Microevolution is the evolution of single-celled organisms, while macroevolution is the evolution of multicellular organisms.

Microevolution is a change in an individual organism over its lifetime, while macroevolution is the change of a population over time.

Microevolution is a slow process, while macroevolution is a rapid process.

Explain the Modern Synthesis and why it was important.

The Modern Synthesis is a theory that integrates genetics and natural selection into a coherent understanding of their relationship. It connects the change in a population over time (microevolution) with the rise of new species and higher taxonomic groups (macroevolution).

The Modern Synthesis is a hypothesis that was falsified by the discovery of DNA.

The Modern Synthesis is a theory that states all acquired traits can be inherited by offspring.

The Modern Synthesis is an explanation for how evolution works that has been largely discredited by modern science.

Describe two of the four key ideas of genetic drift.

Genetic drift is significant in small populations and is random. It can also lead to a loss of genetic variation and can cause slightly harmful alleles to become fixed.

Genetic drift is always beneficial, and it is most significant in large populations.

Genetic drift is caused by selective pressures and leads to a loss of genetic variation.

Genetic drift is a form of natural selection that is significant in large populations.

What are the two main ways a population's genetic diversity can be introduced or increased?

Sexual reproduction and mutation.

Natural selection and genetic drift.

Gene flow and non-random mating.

Artificial selection and domestication.

Explain the difference between homologous and analogous structures, using an example for each.

Homologous structures stem from a common evolutionary past (e.g., the forelimbs of a human and a whale), while analogous structures are similar traits that evolved independently and do not share a common ancestry (e.g., the wings of a bat and a bee).

Homologous structures have a similar function but different origins (e.g., a bat wing and an insect wing), while analogous structures have a similar origin but different functions (e.g., a human arm and a whale flipper).

Homologous structures have a similar function but different origins (e.g., a bird wing and a bee wing), while analogous structures have a similar origin but different functions (e.g., a forelimb of a human and a dog).

Homologous structures result from convergent evolution (e.g., wings on a bat and an insect) and analogous structures result from divergent evolution (e.g., bones in a whale flipper and a bird wing).

Why do scientists consider the theory of evolution a "scientific theory" and not a "theory" in the everyday sense?

In science, a theory is based on a thoroughly tested and verified body of explanations that describe facts about the world. It remains accepted only if it survives significant efforts to disprove it. This is different from the common use of the word "theory" to mean a guess or conjecture.

In science, a theory is a guess or a hypothesis, which is the same as the common vernacular.

Scientists use the term "theory" to mean something that has been proven to be true without any doubt.

Scientists have yet to find any evidence that disproves the theory of evolution, so they consider it a "scientific theory".

Briefly explain the concept of Darwinian fitness and Relative fitness.

Darwinian fitness is a measure of an organism's contribution to the gene pool of the next generation. Relative fitness is how an organism's fitness compares to other organisms in the population.

Darwinian fitness is a measure of an organism's strength and health, while relative fitness is a measure of its speed and endurance.

Darwinian fitness is the ability to survive, while relative fitness is the ability to reproduce.

Darwinian fitness and relative fitness are two terms for the same concept.

Describe a key difference between gymnosperms and angiosperms.

Gymnosperms have seeds that are not enclosed in chambers, while angiosperms have seeds that are enclosed in chambers that develop from flowers.

Gymnosperms have seeds that are enclosed in a chamber, while angiosperms have seeds that are not.

Gymnosperms are non-vascular plants, while angiosperms are vascular plants.

Gymnosperms reproduce asexually, while angiosperms reproduce sexually.

What is a cladogram and what is a clade?

A cladogram is a diagram used to reflect a hypothesis of evolutionary relationships, and a clade is a group of organisms that descended from a single ancestor.

A cladogram is a group of organisms descended from a common ancestor, and a clade is a diagram showing the evolutionary pathways and connections among organisms.

A cladogram is a method of classifying organisms based on their physical features, and a clade is a group of organisms that are phenotypically similar.

A cladogram is the study of fossils, and a clade is the study of geographic distribution of species.

What is a hybrid zone?

An area where two closely related species continue to interact and reproduce, forming hybrids.

An area where two species have become completely separated and no longer reproduce.

An area where a new species has just been formed through speciation.

A region where a population has been divided by a physical barrier.

BIOL1307 - Castro - Exam 1 Review

Quiz

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Biology

•

University

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Practice Problem

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Hard

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NGSS

HS-LS4-2, HS-LS4-4, HS-LS4-1

+3

Standards-aligned

Kristen Gragert

Used 2+ times

FREE Resource

30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Natural selection is a dominant evolutionary force, but what is responsible for introducing new traits and behaviors into a population?

Genetic drift

Mutation

Stabilizing selection

Directional selection

Diversifying selection

Sexual selection

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BIOL1307 - Castro - Exam 1 Review

30 questions

Natural selection is a dominant evolutionary force, but what is responsible for introducing new traits and behaviors into a population?

A change in the frequency of an allele in a population is the definition of evolution according to the field of...

According to the Hardy-Weinberg Principle, a population's allele and genotype frequencies will remain stable unless what is acting upon it?

Which of the following is not one of the five conditions for a population to be in Hardy-Weinberg equilibrium?

When a portion of a population leaves to start a new population in a different location, and the genetic structure of the new population changes to match the founding individuals, this is known as the...

The flow of alleles into or out of a population due to the migration of individuals or their gametes is called...

Which type of selection favors two or more extreme phenotypes over the average phenotype?

The term for the evolutionary history and relationship of an organism or a group of organisms is...

Which of the following is the correct order of the taxonomic classification system from most inclusive to most specific?

The scientific name of an organism, such as Canis lupus for the wolf, consists of its...

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