BIO 206 FINAL EXAM
300+ (2026 Exam Bundle) Solved Questions | Correct Answer Keys | 100%
Verified
100% Guarantee Pass
📋 DOCUMENT OVERVIEW 305 Qs
This document, Bio 206 FINAL EXAM, contains 305 questions that cover specific topics in genetics,
including mitosis vs meiosis, Mendel's laws, probability rules, nondisjunction, chromosome structure, allele
frequencies, and X-linked recessive genes. Each question includes a correct answer with detailed
explanations and rationales, accompanied by diagrams and images. By utilizing this document, students
can study, review, and deepen their understanding of genetics concepts, facilitating a comprehensive
review for exam preparation .
✓ Verified Answers ✓ Exam Ready ✓ Study Guide
Trusted by thousands of students and professionals worldwide
EXAM QUESTIONS
QUESTION 1
mitosis vs meiosis
CORRECT ANSWER
Mitosis: one division forming 2 identical cells (clones); Meiosis: two divisions forming 4 genetically different
cells
RATIONALE: Mitosis is the correct process for producing identical cells because it involves a single division where the
replicated DNA is divided equally between two daughter cells, resulting in cells that have the same number of chromosomes
and genetic makeup as the parent cell. Meiosis, on the other hand, is the correct process for producing genetically different
cells because it involves two consecutive divisions that reduce the number of chromosomes by half, resulting in four unique
daughter cells with different combinations of genetic traits.
Trusted by thousands of students and professionals worldwide Page 1 of 192
, QUESTION 2
Why was Mendel's pea experiments so successful?
CORRECT ANSWER
1. Garden pea was ideal organism (easy to grow, large number of offspring, etc.)
2. Analyzed traits individually
3. Established pure (true) breeding lines
4. Performed reciprocal crosses
5. Performed statistical analyses
RATIONALE: Mendel's selection of the garden pea as the ideal organism for his experiments was successful because it has
a relatively short generation time, produces large quantities of offspring, and exhibits clear-cut traits, making it an ideal
candidate for studying genetic inheritance. By applying rigorous experimental design and analysis techniques, including the
examination of individual traits, establishment of pure breeding lines, reciprocal crosses, and statistical analysis, Mendel was
able to uncover the fundamental laws of inheritance that underpin modern genetics.
QUESTION 3
Law of Segregation
CORRECT ANSWER
Mendel's law that states that the pairs of homologous chromosomes separate in meiosis so that only one
chromosome from each pair is present in each gamete
RATIONALE: Mendel's law of segregation describes the correct separation of homologous chromosomes during meiosis
because it ensures that each gamete receives a unique combination of genetic traits, allowing for genetic diversity and
increasing the chances of viable offspring. This process eliminates the possibility of gametes containing duplicate or missing
chromosomes, which would disrupt the normal expression of genetic traits and potentially lead to developmental problems.
QUESTION 4
Law of independent assortment
CORRECT ANSWER
the law that states that genes separate independently of one another in meiosis
RATIONALE: The law of independent assortment is correct because it describes the random shuffling of genetic traits
during meiosis, allowing for unique combinations of alleles from different genes to be passed on to offspring. This principle
is crucial for genetic diversity and is supported by the way chromosomes separate and recombine during meiosis, resulting
in the unique genetic makeup of each individual.
Trusted by thousands of students and professionals worldwide Page 2 of 192
, QUESTION 5
sum rule
CORRECT ANSWER
probability of A or B occurring? Add the probabilities of each
RATIONALE: This answer correctly applies the sum rule in probability theory, which states that the probability of one event
or another occurring is the sum of their individual probabilities, allowing the student to visually represent the concept of
combining probabilities. The underlined "or" emphasizes the logical operator used to combine the probabilities, and the
added numbers demonstrate the application of the sum rule in a concrete example.
QUESTION 6
product rule
CORRECT ANSWER
probability of A and B occurring? Multiply the probabilities of each
RATIONALE: The statement "
probability of A and B occurring? Multiply the probabilities of each
" is the correct application of the product rule because it accurately represents the concept of combining the probabilities of
two independent events by multiplying their individual probabilities. This is based on the mathematical principle that when
two events are independent, the probability of both occurring together is the product of their separate probabilities.
QUESTION 7
binomial expansion
CORRECT ANSWER
Represents all of the possibilities for a given set of unordered events
RATIONALE: The binomial expansion represents all the possibilities for a given set of unordered events because it
calculates the number of combinations, which considers the order of events as irrelevant, thus providing an exhaustive list
of outcomes. This exhaustive list accounts for every possible combination of events, making it a comprehensive
representation of all possibilities for a given set of unordered events.
Trusted by thousands of students and professionals worldwide Page 3 of 192
, QUESTION 8
We can use the laws of probability to predict a particular genotype from multiple genes that assort
independently.
Assuming the cross AaBbCcDd x AaBbCcDd, what is the probability of getting a... ... 1. completely
homozygous recessive individual?
2. completely homozygous dominant individual?
3. completely homozygous recessive or dominant individual?
4. completely heterozygous individual?
CORRECT ANSWER
RATIONALE: 1. The probability of getting a completely homozygous recessive individual is 1/32, because each gene has
two possible alleles and there are four genes in this cross, resulting in 2^4 = 16 possible genotypes, and only one of them
is homozygous recessive.
2. The probability of getting a completely homozygous dominant individual is 1/32, for the same reason as in question 1,
but now one of the possible genotypes is homozygous dominant.
3. The probability of getting a completely homozygous recessive or dominant individual is 2/32 = 1/16, because this
includes two out of the 16 possible genotypes.
4. The probability of getting a completely heterozygous individual is 12/32 = 3/8, because there are 12 out of the 16
possible genotypes that are heterozygous.
Trusted by thousands of students and professionals worldwide Page 4 of 192
300+ (2026 Exam Bundle) Solved Questions | Correct Answer Keys | 100%
Verified
100% Guarantee Pass
📋 DOCUMENT OVERVIEW 305 Qs
This document, Bio 206 FINAL EXAM, contains 305 questions that cover specific topics in genetics,
including mitosis vs meiosis, Mendel's laws, probability rules, nondisjunction, chromosome structure, allele
frequencies, and X-linked recessive genes. Each question includes a correct answer with detailed
explanations and rationales, accompanied by diagrams and images. By utilizing this document, students
can study, review, and deepen their understanding of genetics concepts, facilitating a comprehensive
review for exam preparation .
✓ Verified Answers ✓ Exam Ready ✓ Study Guide
Trusted by thousands of students and professionals worldwide
EXAM QUESTIONS
QUESTION 1
mitosis vs meiosis
CORRECT ANSWER
Mitosis: one division forming 2 identical cells (clones); Meiosis: two divisions forming 4 genetically different
cells
RATIONALE: Mitosis is the correct process for producing identical cells because it involves a single division where the
replicated DNA is divided equally between two daughter cells, resulting in cells that have the same number of chromosomes
and genetic makeup as the parent cell. Meiosis, on the other hand, is the correct process for producing genetically different
cells because it involves two consecutive divisions that reduce the number of chromosomes by half, resulting in four unique
daughter cells with different combinations of genetic traits.
Trusted by thousands of students and professionals worldwide Page 1 of 192
, QUESTION 2
Why was Mendel's pea experiments so successful?
CORRECT ANSWER
1. Garden pea was ideal organism (easy to grow, large number of offspring, etc.)
2. Analyzed traits individually
3. Established pure (true) breeding lines
4. Performed reciprocal crosses
5. Performed statistical analyses
RATIONALE: Mendel's selection of the garden pea as the ideal organism for his experiments was successful because it has
a relatively short generation time, produces large quantities of offspring, and exhibits clear-cut traits, making it an ideal
candidate for studying genetic inheritance. By applying rigorous experimental design and analysis techniques, including the
examination of individual traits, establishment of pure breeding lines, reciprocal crosses, and statistical analysis, Mendel was
able to uncover the fundamental laws of inheritance that underpin modern genetics.
QUESTION 3
Law of Segregation
CORRECT ANSWER
Mendel's law that states that the pairs of homologous chromosomes separate in meiosis so that only one
chromosome from each pair is present in each gamete
RATIONALE: Mendel's law of segregation describes the correct separation of homologous chromosomes during meiosis
because it ensures that each gamete receives a unique combination of genetic traits, allowing for genetic diversity and
increasing the chances of viable offspring. This process eliminates the possibility of gametes containing duplicate or missing
chromosomes, which would disrupt the normal expression of genetic traits and potentially lead to developmental problems.
QUESTION 4
Law of independent assortment
CORRECT ANSWER
the law that states that genes separate independently of one another in meiosis
RATIONALE: The law of independent assortment is correct because it describes the random shuffling of genetic traits
during meiosis, allowing for unique combinations of alleles from different genes to be passed on to offspring. This principle
is crucial for genetic diversity and is supported by the way chromosomes separate and recombine during meiosis, resulting
in the unique genetic makeup of each individual.
Trusted by thousands of students and professionals worldwide Page 2 of 192
, QUESTION 5
sum rule
CORRECT ANSWER
probability of A or B occurring? Add the probabilities of each
RATIONALE: This answer correctly applies the sum rule in probability theory, which states that the probability of one event
or another occurring is the sum of their individual probabilities, allowing the student to visually represent the concept of
combining probabilities. The underlined "or" emphasizes the logical operator used to combine the probabilities, and the
added numbers demonstrate the application of the sum rule in a concrete example.
QUESTION 6
product rule
CORRECT ANSWER
probability of A and B occurring? Multiply the probabilities of each
RATIONALE: The statement "
probability of A and B occurring? Multiply the probabilities of each
" is the correct application of the product rule because it accurately represents the concept of combining the probabilities of
two independent events by multiplying their individual probabilities. This is based on the mathematical principle that when
two events are independent, the probability of both occurring together is the product of their separate probabilities.
QUESTION 7
binomial expansion
CORRECT ANSWER
Represents all of the possibilities for a given set of unordered events
RATIONALE: The binomial expansion represents all the possibilities for a given set of unordered events because it
calculates the number of combinations, which considers the order of events as irrelevant, thus providing an exhaustive list
of outcomes. This exhaustive list accounts for every possible combination of events, making it a comprehensive
representation of all possibilities for a given set of unordered events.
Trusted by thousands of students and professionals worldwide Page 3 of 192
, QUESTION 8
We can use the laws of probability to predict a particular genotype from multiple genes that assort
independently.
Assuming the cross AaBbCcDd x AaBbCcDd, what is the probability of getting a... ... 1. completely
homozygous recessive individual?
2. completely homozygous dominant individual?
3. completely homozygous recessive or dominant individual?
4. completely heterozygous individual?
CORRECT ANSWER
RATIONALE: 1. The probability of getting a completely homozygous recessive individual is 1/32, because each gene has
two possible alleles and there are four genes in this cross, resulting in 2^4 = 16 possible genotypes, and only one of them
is homozygous recessive.
2. The probability of getting a completely homozygous dominant individual is 1/32, for the same reason as in question 1,
but now one of the possible genotypes is homozygous dominant.
3. The probability of getting a completely homozygous recessive or dominant individual is 2/32 = 1/16, because this
includes two out of the 16 possible genotypes.
4. The probability of getting a completely heterozygous individual is 12/32 = 3/8, because there are 12 out of the 16
possible genotypes that are heterozygous.
Trusted by thousands of students and professionals worldwide Page 4 of 192
