BSC1005 Final Exam 2025/2026 Actual Complete Real Exam
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How many chromosomes can a gamete possess as a result of
nondisjunction? -
ANSWER-n + 1 or
n-1
In meiosis, how does prophase I differ from prophase II? -
ANSWER-During
prophase I there is one diploid cell; during prophase II there
are two haploid
cells.
What chromosomes belong to a normal human female? -
ANSWER-44
autosomes and 2 X
chromosomes
Sympatric speciation specifically excludes ______. -
ANSWER-Geographic
isolation
What type of reproductive isolating mechanism is described
by a situation in
,which female fireflies only mate with males who emit light
in a particular
pattern? - ANSWER-behavioral
isolation
The type of reproductive barrier that occurs when two species
mate but produce
sterile hybrids is referred to as ______. - ANSWER-a
postzygotic barrier
Which of the following describes allopatric speciation? -
ANSWER-A population of squirrels is separated by the Grand
Canyon. The two subpopulations evolve into two distinct
species.
Under the biological species concept, what criterion is used to
assign populations of organisms to the same biological
species? - ANSWER-being able to interbreed and produce
fertile offspring
Speciation requires ______. - ANSWER-genetic isolation
The wing of a penguin is ______ the wing of a butterfly. -
ANSWER-analogous to
Homology is evidence of ______. - ANSWER-Common ancestry
Feathers in birds appear to have first evolved for insulation but
later conveyed a
, new advantage in helping create light aerodynamic
surfaces. This switch in
function is an example of ______. - ANSWER-an
exaptation
Of the following taxonomic levels, species found within the
same ______ are
the most closely related. -
ANSWER-family
Peptide bonds form between ______. - ANSWER-amino acids
The DNA codon AGT codes for an amino acid carried by a
tRNA with the
anticodon ______. -
ANSWER-AGU
Where is translation accomplished? - ANSWER-ribosomes
RNA contains the nitrogenous base ______ instead of ______,
which is only
found in DNA. - ANSWER-uracil...
thymine
The region of DNA where RNA synthesis begins is the
______. - ANSWER-
promoter
Questions And Verified Answers | 100% Correct Answers |
Already Graded A+ | Guaranteed Success!! Newest Exam |
Just Released!!
How many chromosomes can a gamete possess as a result of
nondisjunction? -
ANSWER-n + 1 or
n-1
In meiosis, how does prophase I differ from prophase II? -
ANSWER-During
prophase I there is one diploid cell; during prophase II there
are two haploid
cells.
What chromosomes belong to a normal human female? -
ANSWER-44
autosomes and 2 X
chromosomes
Sympatric speciation specifically excludes ______. -
ANSWER-Geographic
isolation
What type of reproductive isolating mechanism is described
by a situation in
,which female fireflies only mate with males who emit light
in a particular
pattern? - ANSWER-behavioral
isolation
The type of reproductive barrier that occurs when two species
mate but produce
sterile hybrids is referred to as ______. - ANSWER-a
postzygotic barrier
Which of the following describes allopatric speciation? -
ANSWER-A population of squirrels is separated by the Grand
Canyon. The two subpopulations evolve into two distinct
species.
Under the biological species concept, what criterion is used to
assign populations of organisms to the same biological
species? - ANSWER-being able to interbreed and produce
fertile offspring
Speciation requires ______. - ANSWER-genetic isolation
The wing of a penguin is ______ the wing of a butterfly. -
ANSWER-analogous to
Homology is evidence of ______. - ANSWER-Common ancestry
Feathers in birds appear to have first evolved for insulation but
later conveyed a
, new advantage in helping create light aerodynamic
surfaces. This switch in
function is an example of ______. - ANSWER-an
exaptation
Of the following taxonomic levels, species found within the
same ______ are
the most closely related. -
ANSWER-family
Peptide bonds form between ______. - ANSWER-amino acids
The DNA codon AGT codes for an amino acid carried by a
tRNA with the
anticodon ______. -
ANSWER-AGU
Where is translation accomplished? - ANSWER-ribosomes
RNA contains the nitrogenous base ______ instead of ______,
which is only
found in DNA. - ANSWER-uracil...
thymine
The region of DNA where RNA synthesis begins is the
______. - ANSWER-
promoter
