BIOL 1200 FINAL PRACTICE EXAM
STUDY GUIDE ECU HARRIS WITH
QUESTIONS AND CORRECT VERIFIED
ANSWERS | 2026/2027 CYCLE |
GUARANTEED PASS | ALREADY GRADED
A+ | BRAND NEW VERSION!!!!!
What is a theory? - CORRECTANSWER Widely accepted explanation for a natural phenomenon
that has been scientifically tested
What is the difference between a hypothesis and a theory? - CORRECTANSWER -Theory is not
considered to be true
-Theory can be backed by evidence
-Hypothesis is testable
Charles Darwin - CORRECTANSWER English naturalist
-father of modern evolutionary theory
-Wrote "Origin of Species"
Inheritance of acquired characteristics - CORRECTANSWER -Lamarckian belief that changes in
an individual's life would be passed along to their offspring
,-i.e. giraffe stretched neck to reach trees and offspring would have long necks
transitional forms - CORRECTANSWER fossils that connect ancestral species with their
descendants through a series of tiny steps i.e. pakicetus is an ancestor to whales
Vestigial traits with examples - CORRECTANSWER Structures in organisms that serve no
purpose and are residual from ancestor species i.e. wings on flightless birds, hind leg bones in
fish
Homology - CORRECTANSWER anatomical commonalities between species indicating a
common ancestor i.e. arm bones in humans, fish, reptiles, etc.
Phylogeny - CORRECTANSWER origin of the division of a line of species
evolutionary history of a group or organisms that shows ancestor-descendent relationships
Developmental homology - CORRECTANSWER similarities of embryonic traits between several
species
Genetic Homology - CORRECTANSWER similarity in dna of different species
natural selection-necessary factors - CORRECTANSWER 1. more individuals are produced than
can survive
2.population variation exists
3. traits are genetically heritable
4. offspring better suited to the environment will survive
Selection operates on what (what is being selected) - CORRECTANSWER selection operates on
the physical characteristics-phenotype
, What do Allele frequency changes occur in - CORRECTANSWER individuals
Biological Fitness - CORRECTANSWER ability of an individual to produce offspring compared to
individuals of the same species
Biological species concept- defining a species - CORRECTANSWER
prezygotic isolating mechanisms - CORRECTANSWER when individuals of different species are
prevented from mating
Temporal-different mating times
Habitats
Behavioral, i.e. different mating calls
Mechanical-structurally incompatible
genetic-gametes wont fuse
Postzygotic isolating mechanism - CORRECTANSWER individuals of different species mate but
the hybrid produced has low fitness and may not survive or produce offspring
inviability-embryos may not develop properly
fertility-hybrids cannot produce offspring
i.e. mules from horse and donkey
Allopatric speciation - CORRECTANSWER speciation due to geographic separation, when a
population becomes isolated by a physical barrier mutations arise and are reproductively
isolated if the species come into contact i.e. squirrels on either side of grand canyon
Vicariance - CORRECTANSWER the physical separation of a species
STUDY GUIDE ECU HARRIS WITH
QUESTIONS AND CORRECT VERIFIED
ANSWERS | 2026/2027 CYCLE |
GUARANTEED PASS | ALREADY GRADED
A+ | BRAND NEW VERSION!!!!!
What is a theory? - CORRECTANSWER Widely accepted explanation for a natural phenomenon
that has been scientifically tested
What is the difference between a hypothesis and a theory? - CORRECTANSWER -Theory is not
considered to be true
-Theory can be backed by evidence
-Hypothesis is testable
Charles Darwin - CORRECTANSWER English naturalist
-father of modern evolutionary theory
-Wrote "Origin of Species"
Inheritance of acquired characteristics - CORRECTANSWER -Lamarckian belief that changes in
an individual's life would be passed along to their offspring
,-i.e. giraffe stretched neck to reach trees and offspring would have long necks
transitional forms - CORRECTANSWER fossils that connect ancestral species with their
descendants through a series of tiny steps i.e. pakicetus is an ancestor to whales
Vestigial traits with examples - CORRECTANSWER Structures in organisms that serve no
purpose and are residual from ancestor species i.e. wings on flightless birds, hind leg bones in
fish
Homology - CORRECTANSWER anatomical commonalities between species indicating a
common ancestor i.e. arm bones in humans, fish, reptiles, etc.
Phylogeny - CORRECTANSWER origin of the division of a line of species
evolutionary history of a group or organisms that shows ancestor-descendent relationships
Developmental homology - CORRECTANSWER similarities of embryonic traits between several
species
Genetic Homology - CORRECTANSWER similarity in dna of different species
natural selection-necessary factors - CORRECTANSWER 1. more individuals are produced than
can survive
2.population variation exists
3. traits are genetically heritable
4. offspring better suited to the environment will survive
Selection operates on what (what is being selected) - CORRECTANSWER selection operates on
the physical characteristics-phenotype
, What do Allele frequency changes occur in - CORRECTANSWER individuals
Biological Fitness - CORRECTANSWER ability of an individual to produce offspring compared to
individuals of the same species
Biological species concept- defining a species - CORRECTANSWER
prezygotic isolating mechanisms - CORRECTANSWER when individuals of different species are
prevented from mating
Temporal-different mating times
Habitats
Behavioral, i.e. different mating calls
Mechanical-structurally incompatible
genetic-gametes wont fuse
Postzygotic isolating mechanism - CORRECTANSWER individuals of different species mate but
the hybrid produced has low fitness and may not survive or produce offspring
inviability-embryos may not develop properly
fertility-hybrids cannot produce offspring
i.e. mules from horse and donkey
Allopatric speciation - CORRECTANSWER speciation due to geographic separation, when a
population becomes isolated by a physical barrier mutations arise and are reproductively
isolated if the species come into contact i.e. squirrels on either side of grand canyon
Vicariance - CORRECTANSWER the physical separation of a species
