Question 1

An allele that produces an inactive enzyme would be classified as what kind of allele?

Accepted Answer

A) Loss of function 
B) Gain of function 
C) Dominant 
D) These do not occur and therefore there is no classification for them. 
A) Loss of function 
B) Gain of function 
C) Dominant 
D) These do not occur and therefore there is no classification for them. A

Question 2

The probability that one event or another will occur is based on which of the following?

Accepted Answer

A) Sum rule 
B) Product rule 
C) Chi-square test 
D) Binomial expansion 
E) Random sampling error 
A) Sum rule 
B) Product rule 
C) Chi-square test 
D) Binomial expansion 
E) Random sampling error A

Question 3

An individual who has two different alleles for a trait is called ____________.

Accepted Answer

A) Haploid 
B) Homozygous 
C) Heterozygous 
D) Isozygous 
E) True-breeding 
A) Haploid 
B) Homozygous 
C) Heterozygous 
D) Isozygous 
E) True-breeding C

Question 4

The Chi-square test is used to prove that a hypothesis is correct.

Accepted Answer

A) True 
 B)False

Question 5

Mendel's work with single-factor crosses resulted in the development of which of the following?

Accepted Answer

A) Law of segregation 
B) Law of independent assortment 
C) Theory of natural selection 
D) Law of biological evolution 
E) All of the answers are correct 
A) Law of segregation 
B) Law of independent assortment 
C) Theory of natural selection 
D) Law of biological evolution 
E) All of the answers are correct

Question 6

The following question refers to the Punnett square below. Which letter represents a homozygotic dominant progeny?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
A)  A 
B)  B 
C)  C 
D)  D

Question 7

Two dihybrid pea plants (both tall and with purple flowers) are mated. The cross resulted in 9866 progeny, of which 5550 were tall with purple flowers. What are the expected ratios of the other phenotypic classes?

Accepted Answer

A)  1850 Short/white flower 616 Tall/white flower 1850 Short/purple flower 
B)  1850 Short/white flower 1850 Tall/white flower 1850 Short/purple flower 
C)  616 Short/white flower 1850 Tall/white flower 1850 Short/purple flower 
D)  5550 Short/white flower 5550 Tall/white flower 5550 Short/purple flower 
A)  1850 Short/white flower 616 Tall/white flower 1850 Short/purple flower 
B)  1850 Short/white flower 1850 Tall/white flower 1850 Short/purple flower 
C)  616 Short/white flower 1850 Tall/white flower 1850 Short/purple flower 
D)  5550 Short/white flower 5550 Tall/white flower 5550 Short/purple flower

Question 8

If the progeny of a mating of pea plants have the following ratios 1342 smooth seed/green pod, 447 wrinkled seed/yellow pod, 429 smooth seed/ yellow pod, 1361 wrinkled seed/green pod what are the genotypes of the parents?

Accepted Answer

A) Parent 1: Homozygous for seed shape and pod color Parent 2: Heterozygous for seed shape and homozygous for pod color 
B) Both parents are heterozygous for seed shape and pod color 
C) Parent 1: Heterozygous for seed shape and pod color Parent 2: Homozygous seed shape and heterozygous for pod color 
D) Parent 1: Heterozygous for both seed shape and pod color Parent 2: Homozygous for both seed shape and pod color 
A) Parent 1: Homozygous for seed shape and pod color Parent 2: Heterozygous for seed shape and homozygous for pod color 
B) Both parents are heterozygous for seed shape and pod color 
C) Parent 1: Heterozygous for seed shape and pod color Parent 2: Homozygous seed shape and heterozygous for pod color 
D) Parent 1: Heterozygous for both seed shape and pod color Parent 2: Homozygous for both seed shape and pod color

Question 9

A coin is flipped 100 times, with a result of 53 heads and 47 tails. The deviation between the observed numbers and the expected 50-50 results is called _________.

Accepted Answer

A) Probability 
B) Degrees of freedom 
C) Goodness of fit 
D) Random sampling error 
E) Standard error 
A) Probability 
B) Degrees of freedom 
C) Goodness of fit 
D) Random sampling error 
E) Standard error

Question 10

The results that demonstrated that traits were not blended were the ones where

Accepted Answer

A) The F2 plants were selfed 
B) The true-breeding parents were crossed 
C) The F1 generation plants were selfed 
D) None of these experiments refuted the blending hypothesis 
A) The F2 plants were selfed 
B) The true-breeding parents were crossed 
C) The F1 generation plants were selfed 
D) None of these experiments refuted the blending hypothesis

Question 11

Which of the following would be used to determine the probability of three independent events in order?

Accepted Answer

A) Sum rule 
B) Product rule 
C) Chi-square test 
D) Binomial expansion 
E) Random sampling error 
A) Sum rule 
B) Product rule 
C) Chi-square test 
D) Binomial expansion 
E) Random sampling error

Question 12

Which definition below is the best definition for probability?

Accepted Answer

A) The number of times a coin is flipped 
B) The number of times homozygotic recessives appear through successive generations of a family as compared to heterozygotes 
C) The chance that an outcome will occur in the future 
D) The frequency at which homozygous recessive traits are seen in an individual mating 
A) The number of times a coin is flipped 
B) The number of times homozygotic recessives appear through successive generations of a family as compared to heterozygotes 
C) The chance that an outcome will occur in the future 
D) The frequency at which homozygous recessive traits are seen in an individual mating

Question 13

In a dihybrid cross using Mendelian inheritance, if both parents are heterozygous for both traits, what will be the phenotypic ratio of their offspring?

Accepted Answer

A) 3:1 
B) 1:2:1 
C) 1:1 
D) 9:3:3:1 
A) 3:1 
B) 1:2:1 
C) 1:1 
D) 9:3:3:1

Question 14

Polymerase chain reaction (PCR) can be used for many different purposes, including determining paternity. PCR amplifies specific DNA sequences from complex mixtures and can be used to amplify sequences that although they may not have any known function may have several unique sizes and these different forms are inherited according to the Law of Segregation. Below is a diagram of an agarose gel of PCR samples from a mother, and several children. Which letters represent children that could be biologically related to the mother?

Accepted Answer

A) A, B, and C 
B) All of the children could be related to the mother 
C) B, C, and D 
A) A, B, and C 
B) All of the children could be related to the mother 
C) B, C, and D

Question 15

The chance that a future event will occur is called ____________.

Accepted Answer

A) Probability 
B) Goodness of fit 
C) Degrees of freedom 
D) Random selection 
E) All of the answers are correct 
A) Probability 
B) Goodness of fit 
C) Degrees of freedom 
D) Random selection 
E) All of the answers are correct

Question 16

Which of the following is correct regarding the blending hypothesis of inheritance?

Accepted Answer

A) It suggested that hereditary traits blended from one generation to the next 
B) It was possible for the blending to change the trait from one generation to the next 
C) It was supported by early research by Joseph Kölreuter 
D) It was the prevailing hypothesis of inheritance prior to Mendel 
E) All of the answers are correct 
A) It suggested that hereditary traits blended from one generation to the next 
B) It was possible for the blending to change the trait from one generation to the next 
C) It was supported by early research by Joseph Kölreuter 
D) It was the prevailing hypothesis of inheritance prior to Mendel 
E) All of the answers are correct

Question 17

The _______ is the observable characteristics of an individual.

Accepted Answer

A) character 
B) genotype 
C) phenotype 
D) dominant trait 
E) recessive trait 
A) character 
B) genotype 
C) phenotype 
D) dominant trait 
E) recessive trait

Question 18

If a Punnett square is used to visualize a three-factor cross (trihybrid cross) how many boxes would be inside of the square?

Accepted Answer

A) 3 
B) 8 
C) 48 
D) 64 
E) Can't be determined 
A) 3 
B) 8 
C) 48 
D) 64 
E) Can't be determined

Question 19

Huntington's Disease is a fatal syndrome caused by a mutation in the HD gene. The disease has an average age of onset of 35 and the majority of individuals that are affected are heterozygotes. What is the probability that a 25 year old woman with no symptoms and who is the daughter of a man that has HD and a mother who does not will have a child that will have the mutant HD allele?

Accepted Answer

A) 25% 
B) 50% 
C) 75% 
D) 100% 
A) 25% 
B) 50% 
C) 75% 
D) 100%

Question 20

The observable characteristics of an organism are called its ___________.

Accepted Answer

A) Phenotype 
B) Genotype 
C) Dominance 
D) Genes 
E) None of the answers are correct 
A) Phenotype 
B) Genotype 
C) Dominance 
D) Genes 
E) None of the answers are correct

Exam 2: Mendelian Inheritance

An allele that produces an inactive enzyme would be classified as what kind of allele?

The probability that one event or another will occur is based on which of the following?

An individual who has two different alleles for a trait is called ____________.

The Chi-square test is used to prove that a hypothesis is correct.

Mendel's work with single-factor crosses resulted in the development of which of the following?

The following question refers to the Punnett square below. Which letter represents a homozygotic dominant progeny?

Two dihybrid pea plants (both tall and with purple flowers) are mated. The cross resulted in 9866 progeny, of which 5550 were tall with purple flowers. What are the expected ratios of the other phenotypic classes?

If the progeny of a mating of pea plants have the following ratios 1342 smooth seed/green pod, 447 wrinkled seed/yellow pod, 429 smooth seed/ yellow pod, 1361 wrinkled seed/green pod what are the genotypes of the parents?

A coin is flipped 100 times, with a result of 53 heads and 47 tails. The deviation between the observed numbers and the expected 50-50 results is called _________.

The results that demonstrated that traits were not blended were the ones where

Which of the following would be used to determine the probability of three independent events in order?

Which definition below is the best definition for probability?

In a dihybrid cross using Mendelian inheritance, if both parents are heterozygous for both traits, what will be the phenotypic ratio of their offspring?

The chance that a future event will occur is called ____________.

Which of the following is correct regarding the blending hypothesis of inheritance?

The _______ is the observable characteristics of an individual.

If a Punnett square is used to visualize a three-factor cross (trihybrid cross) how many boxes would be inside of the square?

The observable characteristics of an organism are called its ___________.

Overview of Genetics

Chromosome Transmission During Cell Division and Sexual Reproduction

Extensions of Mendelian Inheritance

Non-Mendelian Inheritance

Genetic Linkage and Mapping in Eukaryotes

Genetic Transfer and Mapping in Bacteria and Bacteriophages

Variation in Chromosome Structure and Number

Molecular Structure of DNA and RNA

Chromosome Organization and Molecular Structure

DNA Replication

Gene Transcription and RNA Modification

Translation of MRNA

Gene Regulation in Bacteria

Gene Regulation in Eukaryotes I: Transcriptional Regulation

Gene Regulation in Eukaryotes II: Epigenetics and Regulation at the RNA Level

Genetics of Viruses

Gene Mutation and Dna Repair

Recombination and Transposition at the Molecular Level

DNA Technologies

Biotechnology

Genomics I: Analysis of DNA

Genomics II: Functional Genomics, Proteomics, and Bioinformatics

Medical Genetics and Cancer

Developmental Genetics

Population Genetics

Quantitative Genetics

Evolutionary Genetics

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