Question 1

How does gibberellic acid affect stem length in pea plants?

Accepted Answer

A) Plants with normal stem length have higher levels of gibberellic acid. 
B) Plants with short stem length have higher levels of gibberellic acid. ​ 
C) Plants with normal stem length have the dominant allele Le that encodes an enzyme to degrade gibberellic acid. 
D) Plants with short stem length have the dominant allele Le that encodes an enzyme to degrade gibberellic acid. ​ 
E) Plants with short stem length are homozygous recessive for the allele le that encodes an enzyme to degrade gibberellic acid. ​ 
A) Plants with normal stem length have higher levels of gibberellic acid. 
B) Plants with short stem length have higher levels of gibberellic acid. ​ 
C) Plants with normal stem length have the dominant allele Le that encodes an enzyme to degrade gibberellic acid. 
D) Plants with short stem length have the dominant allele Le that encodes an enzyme to degrade gibberellic acid. ​ 
E) Plants with short stem length are homozygous recessive for the allele le that encodes an enzyme to degrade gibberellic acid. ​

Question 2

Match between columns
                        Premises: dihybrid

Accepted Answer

The Answer of The first generation of offspring from the is...

Question 3

If your mother is heterozygous for Huntington's disease, which is caused by a dominant allele, the odds that you will inherit the disorder from her are ____. ​

Accepted Answer

A) 1/4 
B) 1/2 ​ 
C) 3/4 ​ 
D) 1 ​ 
E) 0 ​ 
A) 1/4 
B) 1/2 ​ 
C) 3/4 ​ 
D) 1 ​ 
E) 0 ​

Question 4

In ____, genes at one locus mask the effect of genes at another locus. ​

Accepted Answer

A) incomplete dominance 
B) codominance ​ 
C) epistasis ​ 
D) polygenic inheritance ​ 
E) pleiotropy ​ 
A) incomplete dominance 
B) codominance ​ 
C) epistasis ​ 
D) polygenic inheritance ​ 
E) pleiotropy ​

Question 5

Match between columns
                        Premises: recessive

Accepted Answer

The Answer of Any organism with 2 identical alleles of is...

Question 6

In snapdragons, the red allele C R is incompletely dominant over the white allele C W. If you cross a pink snapdragon ( C R C W)with a white snapdragon ( C W C W), what percentage of the progeny will be red? ​

Accepted Answer

A) 0% 
B) 25% ​ 
C) 50% ​ 
D) 75% ​ 
E) 100% ​ 
A) 0% 
B) 25% ​ 
C) 50% ​ 
D) 75% ​ 
E) 100% ​

Question 7

Match between columns
                        Premises: incomplete dominance

Accepted Answer

The Answer of Any organism with 2 different alleles of is...

Question 8

According to the chromosome theory of inheritance, ____. ​

Accepted Answer

A) genes on chromosomes always assort independently 
B) paternal chromosomes determine the offspring's phenotype ​ 
C) maternal chromosomes determine the offspring's phenotype ​ 
D) genes and their alleles are carried on chromosomes ​ 
E) genes are carried on chromosomes and alleles are the product of gene expression ​ 
A) genes on chromosomes always assort independently 
B) paternal chromosomes determine the offspring's phenotype ​ 
C) maternal chromosomes determine the offspring's phenotype ​ 
D) genes and their alleles are carried on chromosomes ​ 
E) genes are carried on chromosomes and alleles are the product of gene expression ​

Question 9

Your father has type B blood, and your mother has type O blood. You learn that you also have blood type O. What does this tell you? ​

Accepted Answer

A) You father is homozygous for type B blood. 
B) Your mother is heterozygous for type O blood. ​ 
C) Your father's genotype is I B i and your mother's genotype is ii . ​ 
D) Your father's genotype is I B I B and your mother's genotype is ii . 
E) Your father's genotype is I A I B and your mother's genotype is ii . ​ 
A) You father is homozygous for type B blood. 
B) Your mother is heterozygous for type O blood. ​ 
C) Your father's genotype is I B i and your mother's genotype is ii . ​ 
D) Your father's genotype is I B I B and your mother's genotype is ii . 
E) Your father's genotype is I A I B and your mother's genotype is ii . ​

Question 10

Define epistasis and give an example.

Accepted Answer

In epistasis, two or more genes affect t

Question 11

A parent has a genotype of RrYy . What is the probability of this individual producing a gamete with the RY genotype? ​

Accepted Answer

A) 1/2 
B) 1/4 ​ 
C) 3/4 ​ 
D) 1/8 ​ 
E) 0 ​ 
A) 1/2 
B) 1/4 ​ 
C) 3/4 ​ 
D) 1/8 ​ 
E) 0 ​

Question 12

Match between columns
                        Premises: wrinkled vs. round peas

Accepted Answer

The Answer of codominance and epistasis and incomplete dominance and is...

Question 13

Mendel crossed true-breeding plants having yellow peas with true-breeding plants having green peas. The resulting plants all had yellow peas. An F1 cross resulted in 3/4 of the plants having yellow peas and 1/4 of the plants having green peas. What does this tell you about the alleles for color? ​

Accepted Answer

A) yellow is usually the dominant color, but sometimes green can be dominant 
B) green is the dominant color ​ 
C) yellow is the dominant color ​ 
D) yellow is the recessive color ​ 
E) yellow and green are codominant ​ 
A) yellow is usually the dominant color, but sometimes green can be dominant 
B) green is the dominant color ​ 
C) yellow is the dominant color ​ 
D) yellow is the recessive color ​ 
E) yellow and green are codominant ​

Question 14

Match between columns
                        Premises: epistasis

Accepted Answer

The Answer of An FS1U1B11S1U1B0 heterozygote (for a single trait) is...

Question 15

A man and woman are each heterozygous for the autosomal recessive disorder cystic fibrosis. If they want to have three children, what is the probability that only one of the children will have cystic fibrosis? ​

Accepted Answer

A) 1/4 
B) 3/4 ​ 
C) 9/16 ​ 
D) 9/64 ​ 
E) 27/64 ​ 
A) 1/4 
B) 3/4 ​ 
C) 9/16 ​ 
D) 9/64 ​ 
E) 27/64 ​

Question 16

How is Mendel's Principle of Independent Assortment related to meiosis?

Accepted Answer

From his experiments, Mendel concluded t

Question 17

Your mother has albinism, which is a recessive trait. Your father has cystic fibrosis, which is also a recessive trait. You discover that your new father-in-law has albinism and cystic fibrosis. If neither you nor your spouse has either albinism or cystic fibrosis, what are the odds that your first child will have either albinism or cystic fibrosis, but not both? ​

Accepted Answer

A) 1/16 
B) 3/8 ​ 
C) 1/8 ​ 
D) 1/4 ​ 
E) 0 ​ 
A) 1/16 
B) 3/8 ​ 
C) 1/8 ​ 
D) 1/4 ​ 
E) 0 ​

Question 18

Match between columns
                        Premises: snapdragon flower color (red, pink, and white)

Accepted Answer

The Answer of polygenic inheritance and incomplete dominance and epistasis is...

Question 19

We now know that some of the seven alleles Mendel studied are on the same chromosome in pea plants. Despite this, the law of independent assortment still applies. How can you explain this? ​

Accepted Answer

A) Recombination via the synaptonemal complex occurred during mitosis. 
B) Recombination via the synaptonemal complex occurred during meiosis. ​ 
C) The law of independent assortment applies to all alleles regardless of their arrangement on chromosomes. ​ 
D) Mendel was a good enough mathematician to design experiments that would result in the predicted ratios. 
E) Independent assortment occurred during mitosis. 
A) Recombination via the synaptonemal complex occurred during mitosis. 
B) Recombination via the synaptonemal complex occurred during meiosis. ​ 
C) The law of independent assortment applies to all alleles regardless of their arrangement on chromosomes. ​ 
D) Mendel was a good enough mathematician to design experiments that would result in the predicted ratios. 
E) Independent assortment occurred during mitosis.

Question 20

What is the probability of obtaining a head and a tail (in either order)when tossing a coin two times? ​

Accepted Answer

A) 1/2 
B) 1/4 ​ 
C) 1/8 ​ 
D) 1/16 ​ 
E) 1 ​ 
A) 1/2 
B) 1/4 ​ 
C) 1/8 ​ 
D) 1/16 ​ 
E) 1 ​

Exam 12: Mendel, Genes, and Inheritance

How does gibberellic acid affect stem length in pea plants?

If your mother is heterozygous for Huntington's disease, which is caused by a dominant allele, the odds that you will inherit the disorder from her are ____. ​

In ____, genes at one locus mask the effect of genes at another locus. ​

In snapdragons, the red allele C R is incompletely dominant over the white allele C W. If you cross a pink snapdragon ( C R C W)with a white snapdragon ( C W C W), what percentage of the progeny will be red? ​

According to the chromosome theory of inheritance, ____. ​

Your father has type B blood, and your mother has type O blood. You learn that you also have blood type O. What does this tell you? ​

Define epistasis and give an example.

A parent has a genotype of RrYy . What is the probability of this individual producing a gamete with the RY genotype? ​

A man and woman are each heterozygous for the autosomal recessive disorder cystic fibrosis. If they want to have three children, what is the probability that only one of the children will have cystic fibrosis? ​

How is Mendel's Principle of Independent Assortment related to meiosis?

We now know that some of the seven alleles Mendel studied are on the same chromosome in pea plants. Despite this, the law of independent assortment still applies. How can you explain this? ​

What is the probability of obtaining a head and a tail (in either order)when tossing a coin two times? ​

Introduction to Biological Concepts and Research

Life, Chemistry, and Water

Biological Molecules: the Carbon Compounds of Life

Cells

Membranes and Transport

Energy, Enzymes, and Biological Reactions

Cellular Respiration: Harvesting Chemical Energy

Photosynthesis

Cell Communication

Cell Division and Mitosis

Meiosis: the Cellular Basis of Sexual Reproduction

Genes, Chromosomes, and Human Genetics

DNA Structure, Replication, and Organization

From DNA to Protein

Regulation of Gene Expression

Bacterial and Viral Genetics

Dna Technologies: Making and Using Genetically Altered Organisms, and Other Applications

Genomes and Proteomes

The Development of Evolutionary Thought

Microevolution: Genetic Changes Within Populations

Speciation

Paleobiology and Macroevolution

Systematic Biology: Phylogeny and Classification

The Origin of Life

Prokaryotes and Viruses

Protists

Seedless Plants

Seed Plants

Fungi

Animal Phylogeny, Acoelomates, and Protostomes

Deuterostomes: Vertebrates and Their Closest Relatives

The Plant Body

Transport in Plants

Plant Nutrition

Reproduction and Development in Flowering Plants

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Information Flow and the Neuron

Nervous Systems

Sensory Systems

The Endocrine System

Muscles, Bones, and Body Movements

The Circulatory System

Defenses Against Disease

Gas Exchange: the Respiratory System

Animal Nutrition

Regulating the Internal Environment

Animal Reproduction

Animal Development

Ecology and the Biosphere

Population Ecology

Population Interactions and Community Ecology

Ecosystems

Biodiversity and Conservation Biology

Animal Behavior

Filters

If your mother is heterozygous for Huntington's disease, which is caused by a dominant allele, the odds that you will inherit the disorder from her are ____.

In ____, genes at one locus mask the effect of genes at another locus.

In snapdragons, the red allele C ^R is incompletely dominant over the white allele C ^W. If you cross a pink snapdragon ( C ^R C ^W)with a white snapdragon ( C ^W C ^W), what percentage of the progeny will be red?

According to the chromosome theory of inheritance, ____.

Your father has type B blood, and your mother has type O blood. You learn that you also have blood type O. What does this tell you?

A parent has a genotype of RrYy . What is the probability of this individual producing a gamete with the RY genotype?

A man and woman are each heterozygous for the autosomal recessive disorder cystic fibrosis. If they want to have three children, what is the probability that only one of the children will have cystic fibrosis?

We now know that some of the seven alleles Mendel studied are on the same chromosome in pea plants. Despite this, the law of independent assortment still applies. How can you explain this?

What is the probability of obtaining a head and a tail (in either order)when tossing a coin two times?