Question 1

Which definition below is the best definition for probability?

Accepted Answer

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

Question 2

In the biological sciences, the null hypothesis is usually rejected if the P value is ________.

Accepted Answer

A)  Greater than 1 
B)  Less than 0.30 
C)  Less than 0.95 
D)  Less than 0.05 
E)  Less than 1 
A)  Greater than 1 
B)  Less than 0.30 
C)  Less than 0.95 
D)  Less than 0.05 
E)  Less than 1

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

Question 4

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

Question 5

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 6

When Mendel crossed two plants that were heterozygous for a single trait, what was the genotypic ratio of their offspring?

Accepted Answer

A)  1:2:1 
B)  9:3:3:1 
C)  3:1 
D)  1:1 
E)  Varied depending on the trait 
A)  1:2:1 
B)  9:3:3:1 
C)  3:1 
D)  1:1 
E)  Varied depending on the trait

Question 7

The Law of Independent Assortment states that

Accepted Answer

A)  two different genes will randomly assort their alleles during the formation of haploid cells. 
B)  two different alleles will randomly assort during the formation of haploid cells. 
C)  two different genes will NOT randomly assort their alleles during the formation of haploid cells. 
D)  two different genes will randomly assort their alleles during the formation of diploid cells. 
A)  two different genes will randomly assort their alleles during the formation of haploid cells. 
B)  two different alleles will randomly assort during the formation of haploid cells. 
C)  two different genes will NOT randomly assort their alleles during the formation of haploid cells. 
D)  two different genes will randomly assort their alleles during the formation of diploid cells.

Question 8

The genetic composition of an individual is called its ________.

Accepted Answer

A)  phenotype 
B)  genotype 
C)  hybrid 
D)  dominance 
E)  none of the answers are correct 
A)  phenotype 
B)  genotype 
C)  hybrid 
D)  dominance 
E)  none of the answers are correct

Question 9

A couple would like to know what the probability is that out of five children, three will be girls. This is solved using 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

Question 10

The results of a study of a population is presented in the following table. The "-" indicates that the other allele is unknown   Which of the conclusions listed below is correct?

Accepted Answer

A)  The ratios of the offspring in the S- X S - matings conform to the expected ratio for a monohybrid cross. 
B)  The ratios of the offspring in the S - X S - matings are due to some S - parents being homozygotic and some being heterozygotic. 
C)  If the S- offspring of the S - X S - matings were mated to the S - offspring from the S - X ss matings there would be no ss offspring all would be S -. 
D)  All of the S - offspring from the S - X S - matings are homozygotic. 
A)  The ratios of the offspring in the S- X S - matings conform to the expected ratio for a monohybrid cross. 
B)  The ratios of the offspring in the S - X S - matings are due to some S - parents being homozygotic and some being heterozygotic. 
C)  If the S- offspring of the S - X S - matings were mated to the S - offspring from the S - X ss matings there would be no ss offspring all would be S -. 
D)  All of the S - offspring from the S - X S - matings are homozygotic.

Question 11

Mendel's work with two-factor (dihybrid) crosses led directly to which of the following?

Accepted Answer

A)  Chromosomal theory of inheritance 
B)  Particulate theory of inheritance 
C)  Law of segregation 
D)  Law of independent assortment 
E)  Theory of biological evolution 
A)  Chromosomal theory of inheritance 
B)  Particulate theory of inheritance 
C)  Law of segregation 
D)  Law of independent assortment 
E)  Theory of biological evolution

Question 12

What is the probability that an offspring will have an ss/RR genotype from a cross of two Ss/Rr individuals?

Accepted Answer

A)  6.25% 
B)  12.5% 
C)  25% 
D)  3.12% 
A)  6.25% 
B)  12.5% 
C)  25% 
D)  3.12%

Question 13

Which of the following characteristics made the pea plant Pisum sativum an ideal organism for Mendel's studies?

Accepted Answer

A)  It has the ability to self-fertilize 
B)  It was easy to cross-fertilize one plant with another 
C)  It has easily identifiable traits 
D)  All of the answers are correct 
A)  It has the ability to self-fertilize 
B)  It was easy to cross-fertilize one plant with another 
C)  It has easily identifiable traits 
D)  All of the answers are correct

Question 14

If over several generations a trait does not vary in a group of organisms, that group can be called a ________.

Accepted Answer

A)  dihybrid 
B)  hybrid 
C)  true-breeding line 
D)  variant 
E)  cross-fertilized line 
A)  dihybrid 
B)  hybrid 
C)  true-breeding line 
D)  variant 
E)  cross-fertilized line

Question 15

In a Punnett square diagram, the outside of the box represents the ________.

Accepted Answer

A)  diploid offspring 
B)  haploid offspring 
C)  diploid gametes 
D)  haploid gametes 
A)  diploid offspring 
B)  haploid offspring 
C)  diploid gametes 
D)  haploid gametes

Question 16

In a dihybrid testcross, the individual being examined is crossed to which of the following?

Accepted Answer

A)  An individual who is homozygous dominant for one trait but not the other 
B)  Self-fertilized 
C)  An individual who is homozygous recessive for both traits 
D)  An individual who is heterozygous for both traits 
A)  An individual who is homozygous dominant for one trait but not the other 
B)  Self-fertilized 
C)  An individual who is homozygous recessive for both traits 
D)  An individual who is heterozygous for both traits

Question 17

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 18

In a genetic cross, the ________ represent offspring with genetic combinations that were not found in the parental lines.

Accepted Answer

A)  P generation 
B)  nonrecombinates 
C)  parentals 
D)  nonparentals 
E)  none of the above 
A)  P generation 
B)  nonrecombinates 
C)  parentals 
D)  nonparentals 
E)  none of the above

Question 19

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 20

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

Exam 2: Mendelian Inheritance

Which definition below is the best definition for probability?

In the biological sciences, the null hypothesis is usually rejected if the P value is ________.

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

The observable characteristics of an organism are called its ________.

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

When Mendel crossed two plants that were heterozygous for a single trait, what was the genotypic ratio of their offspring?

The Law of Independent Assortment states that

The genetic composition of an individual is called its ________.

A couple would like to know what the probability is that out of five children, three will be girls. This is solved using which of the following?

The results of a study of a population is presented in the following table. The "-" indicates that the other allele is unknown Which of the conclusions listed below is correct?

Mendel's work with two-factor (dihybrid) crosses led directly to which of the following?

What is the probability that an offspring will have an ss/RR genotype from a cross of two Ss/Rr individuals?

Which of the following characteristics made the pea plant Pisum sativum an ideal organism for Mendel's studies?

If over several generations a trait does not vary in a group of organisms, that group can be called a ________.

In a Punnett square diagram, the outside of the box represents the ________.

In a dihybrid testcross, the individual being examined is crossed to which of the following?

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

In a genetic cross, the ________ represent offspring with genetic combinations that were not found in the parental lines.

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

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

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

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 and Translation Regulation

Gene Regulation in Eukaryotes Ii: Epigenetics

Non-Coding Rnas

Genetics of Viruses

Gene Mutation and Dna Repair

Recombination, Immunogenetics, and Transposition

Molecular Technologies

Biotechnology

Genomics I: Analysis of Dna

Genomics Ii: Functional Genomics, Proteomics, and Bioinformatics

Medical Genetics and Cancer

Developmental Genetics

Population Genetics

Complex and Quantitative Traits

Evolutionary Genetics

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