BIO 112~ Exam Review Verified Exam Questions and Answers Latest
update 2026/2027
Question:
One definition of evolution is that evolution is "descent with modification". What does "modification"
refer to in this definition?
Answer:
(1) Mutation and (2) Sexual Mixing
Question:
What is the only statement that is NOT true about the genetic relatedness of life on Earth?
Answer:
Gorillas are the closest living relative to humans
Question:
All but one feature listed below are shared between family trees and phylogenetic trees.
Answer:
Represent populations on each branch
Question:
Which of the following is the only TRUE statement about the origins of the Homo genus?
Answer:
All species in the genus but one are currently extinct
Question:
85% is the approximate...
Answer:
...amount of variation in local human populations
Question:
Which of the following is the only statement that is TRUE about human evolution and diversity?
Answer:
Human population is about ten times less diverse than chimp population
,Question:
Which of the following is the only factor that would lead to a distinct sub-species/race (one that is
distinct from other members of the species)?
Answer:
Reproductive isolation
Question:
Which of the following is the only statement that is NOT true about human races?
Answer:
Human beings are the only species where sub-species/races can never form
Question:
True statements about human races
Answer:
(1) The movement of human beings makes it harder for sub-species/races to form, (2) Human
sub-species/races have not formed, and (3) There is no combination of traits that is concordant with a
human subspecies/race.
Question:
What is the best definition of phenotype?
Answer:
Any characteristics of an organism
Question:
If one organism has a mutation (that another organism does not have), that means that they will have
at least some difference in at least one trait.
Answer:
False
Question:
Which of the following is the only feature of organisms that is NOT a trait?
Answer:
The DNA/genes inside the cells
Question:
Features/Examples of traits
Answer:
(1) The ability to destroy warfarin (anti-clotting drug) function, (2) The skin color, and (3) The ability
to play the piano.
, Question:
Phenotype is on the outside, genotype is on the inside
Answer:
False
Question:
Traits are neither
Answer:
Genes nor Alleles
Question:
What is the best term to describe when two organisms have the following combination:
-the same genetics
-different environments
different traits (different in the sense that for the trait "eye color" one could have brown, green, or blue
eyes)
Answer:
Phenotypic plasticity
Question:
Which of the following is the only statement about human genetics that is NOT generally true?
Answer:
The two homologs have two different alleles for each gene (e.g., for the gene that metabolizes
warfarin)
Question:
True about human genetics
Answer:
(1) Each chromosome in each somatic cell has a matching homolog, (2) Each human somatic cell has
46 chromosomes total, and (3) The two homologs have the same genes (e.g., both would have the gene
that metabolizes warfarin)
Question:
A mutation will lead to...
Answer:
...a new allele of a gene
update 2026/2027
Question:
One definition of evolution is that evolution is "descent with modification". What does "modification"
refer to in this definition?
Answer:
(1) Mutation and (2) Sexual Mixing
Question:
What is the only statement that is NOT true about the genetic relatedness of life on Earth?
Answer:
Gorillas are the closest living relative to humans
Question:
All but one feature listed below are shared between family trees and phylogenetic trees.
Answer:
Represent populations on each branch
Question:
Which of the following is the only TRUE statement about the origins of the Homo genus?
Answer:
All species in the genus but one are currently extinct
Question:
85% is the approximate...
Answer:
...amount of variation in local human populations
Question:
Which of the following is the only statement that is TRUE about human evolution and diversity?
Answer:
Human population is about ten times less diverse than chimp population
,Question:
Which of the following is the only factor that would lead to a distinct sub-species/race (one that is
distinct from other members of the species)?
Answer:
Reproductive isolation
Question:
Which of the following is the only statement that is NOT true about human races?
Answer:
Human beings are the only species where sub-species/races can never form
Question:
True statements about human races
Answer:
(1) The movement of human beings makes it harder for sub-species/races to form, (2) Human
sub-species/races have not formed, and (3) There is no combination of traits that is concordant with a
human subspecies/race.
Question:
What is the best definition of phenotype?
Answer:
Any characteristics of an organism
Question:
If one organism has a mutation (that another organism does not have), that means that they will have
at least some difference in at least one trait.
Answer:
False
Question:
Which of the following is the only feature of organisms that is NOT a trait?
Answer:
The DNA/genes inside the cells
Question:
Features/Examples of traits
Answer:
(1) The ability to destroy warfarin (anti-clotting drug) function, (2) The skin color, and (3) The ability
to play the piano.
, Question:
Phenotype is on the outside, genotype is on the inside
Answer:
False
Question:
Traits are neither
Answer:
Genes nor Alleles
Question:
What is the best term to describe when two organisms have the following combination:
-the same genetics
-different environments
different traits (different in the sense that for the trait "eye color" one could have brown, green, or blue
eyes)
Answer:
Phenotypic plasticity
Question:
Which of the following is the only statement about human genetics that is NOT generally true?
Answer:
The two homologs have two different alleles for each gene (e.g., for the gene that metabolizes
warfarin)
Question:
True about human genetics
Answer:
(1) Each chromosome in each somatic cell has a matching homolog, (2) Each human somatic cell has
46 chromosomes total, and (3) The two homologs have the same genes (e.g., both would have the gene
that metabolizes warfarin)
Question:
A mutation will lead to...
Answer:
...a new allele of a gene
