BLG 144 MIDTERM 1 LATEST EXAM 2025
WITH MULTIPLE CHOICE QUESTIONS
AND DETAILED SOLVED SOLUTIONS
ALREADY GRADED A+ AND 100%
GUARANTEE PASS (BRAND NEW!!!!!!!)
descent with modification - THE CORRECT ANSWER--Darwin
proposed that species in the past are ancestors of species
existing today
1. species change through time
2. species are related by common ancestry.
how old is the earth - THE CORRECT ANSWER-around 3.4-3.6 billion
years ago, life was formed
earth per se is about 4.6 billion years old
transitional feature - THE CORRECT ANSWER-trait in a fossil that is
intermediate between older and younger species
ex. aquatic animals with fins transition to terresterial animals
with limbs
fossil - THE CORRECT ANSWER-any trace of an organism that lived in
the past
fossil record - THE CORRECT ANSWER-all fossils found and recorded
,-indicates that over 99% of all species that have ever lived are
now extinct
geological time scale - THE CORRECT ANSWER-sequence of named
intervals called eons, periods, eras, that represent major events
in earth's history
tetrapods - THE CORRECT ANSWER-4-fotted
vestigial traits - THE CORRECT ANSWER-reduced or incompletely
developed structure with no function or structures in closely
related species
ex. tailbone in humans
-evidence that species have changed through time
homology - THE CORRECT ANSWER-study of likeness
-examining striking similarities among certain organisms that
both inherited the trait from a common ancestor
genetic homology - THE CORRECT ANSWER-occurs in DNA sequences
ex. gene sequences in two different organisms are almost
completely identical
Developmental homology - THE CORRECT ANSWER-recognized in
embryos (development)
-similarity in structures within embryo that either continue to
develop until birth or grow to become another functional trait
, structural homology - THE CORRECT ANSWER-similarity in adult
morphology or form
ex. limbs of vertebrates;same structure, different function
(grasping for humans, digging for moles, etc)
how do the three levels of homology interact - THE CORRECT
ANSWER-genetic homology causes the developmental homologies
observed in embryos, which lead to structural homologies
recognized in adults
darwin's 4 postulates - THE CORRECT ANSWER-1.individual organisms
that make up a population vary in traits they possess
2. some of the trait differences are heritable;passed on to their
offspring genetically
3. many more offspring are produced than can possibly survive
4. individuals that survive best and produce more offspring is
not random; those with certain heritable traits are more likely
to survive and reproduce
fitness - THE CORRECT ANSWER-ability for an organism to produce
surviving offspring
adaption - THE CORRECT ANSWER-heritable trait that increases the
fitness of an individual in a particular environment relative to
individuals lacking that trait
polygenic - THE CORRECT ANSWER-many genes influencing one trait
true or false:
WITH MULTIPLE CHOICE QUESTIONS
AND DETAILED SOLVED SOLUTIONS
ALREADY GRADED A+ AND 100%
GUARANTEE PASS (BRAND NEW!!!!!!!)
descent with modification - THE CORRECT ANSWER--Darwin
proposed that species in the past are ancestors of species
existing today
1. species change through time
2. species are related by common ancestry.
how old is the earth - THE CORRECT ANSWER-around 3.4-3.6 billion
years ago, life was formed
earth per se is about 4.6 billion years old
transitional feature - THE CORRECT ANSWER-trait in a fossil that is
intermediate between older and younger species
ex. aquatic animals with fins transition to terresterial animals
with limbs
fossil - THE CORRECT ANSWER-any trace of an organism that lived in
the past
fossil record - THE CORRECT ANSWER-all fossils found and recorded
,-indicates that over 99% of all species that have ever lived are
now extinct
geological time scale - THE CORRECT ANSWER-sequence of named
intervals called eons, periods, eras, that represent major events
in earth's history
tetrapods - THE CORRECT ANSWER-4-fotted
vestigial traits - THE CORRECT ANSWER-reduced or incompletely
developed structure with no function or structures in closely
related species
ex. tailbone in humans
-evidence that species have changed through time
homology - THE CORRECT ANSWER-study of likeness
-examining striking similarities among certain organisms that
both inherited the trait from a common ancestor
genetic homology - THE CORRECT ANSWER-occurs in DNA sequences
ex. gene sequences in two different organisms are almost
completely identical
Developmental homology - THE CORRECT ANSWER-recognized in
embryos (development)
-similarity in structures within embryo that either continue to
develop until birth or grow to become another functional trait
, structural homology - THE CORRECT ANSWER-similarity in adult
morphology or form
ex. limbs of vertebrates;same structure, different function
(grasping for humans, digging for moles, etc)
how do the three levels of homology interact - THE CORRECT
ANSWER-genetic homology causes the developmental homologies
observed in embryos, which lead to structural homologies
recognized in adults
darwin's 4 postulates - THE CORRECT ANSWER-1.individual organisms
that make up a population vary in traits they possess
2. some of the trait differences are heritable;passed on to their
offspring genetically
3. many more offspring are produced than can possibly survive
4. individuals that survive best and produce more offspring is
not random; those with certain heritable traits are more likely
to survive and reproduce
fitness - THE CORRECT ANSWER-ability for an organism to produce
surviving offspring
adaption - THE CORRECT ANSWER-heritable trait that increases the
fitness of an individual in a particular environment relative to
individuals lacking that trait
polygenic - THE CORRECT ANSWER-many genes influencing one trait
true or false:
