Question 1

In a family that starts with you,your grandchildren would be the _______ generation.

Accepted Answer

A)  P1 
B)  P2 
C)  F1 
D)  F2 
E)  L1 
A)  P1 
B)  P2 
C)  F1 
D)  F2 
E)  L1 D

Question 2

For two traits A and B with two alleles each,the genotypes of the gametes that a heterozygote would produce are

Accepted Answer

A)  AB, Ab, aB, ab. 
B)  AB, ab. 
C)  Ab and ab. 
D)  AB, ab, Ab. 
E)  AA, BB, aa, bb, and Ab. 
A)  AB, Ab, aB, ab. 
B)  AB, ab. 
C)  Ab and ab. 
D)  AB, ab, Ab. 
E)  AA, BB, aa, bb, and Ab. A

Question 3

Destiny has distal symphalangism - her fingers and toes are stiff,with tiny nails.She looks it up and finds it is an autosomal dominant trait.Since her parents do not have it,she reasons that she is a new mutation.However,if she has children,each of them,assuming her partner does not have the condition,has a(n)___ probability of inheriting the condition.

Accepted Answer

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

Question 4

Gregor Mendel is known for

Accepted Answer

A)  studying natural selection in the animal life on the Galapagos. 
B)  breeding plants to demonstrate the logic behind inherited trait transmission. 
C)  experiments that demonstrated the direction of blood's circulation in the body. 
D)  breeding chickens to reveal the laws of inheritance. 
E)  conquering Asia, leaving his Y chromosome in many descendants. 
A)  studying natural selection in the animal life on the Galapagos. 
B)  breeding plants to demonstrate the logic behind inherited trait transmission. 
C)  experiments that demonstrated the direction of blood's circulation in the body. 
D)  breeding chickens to reveal the laws of inheritance. 
E)  conquering Asia, leaving his Y chromosome in many descendants.

Question 5

Cystic fibrosis is autosomal recessive.This means that

Accepted Answer

A)  both sexes can be affected and affected individuals and carriers pass the mutation. 
B)  carrier mothers pass the mutation to some of their sons, but not to their daughters. 
C)  each affected individual has at least one affected parent. 
D)  both sexes are affected because new mutations occur frequently. 
E)  in any particular family, only one sex can be affected. 
A)  both sexes can be affected and affected individuals and carriers pass the mutation. 
B)  carrier mothers pass the mutation to some of their sons, but not to their daughters. 
C)  each affected individual has at least one affected parent. 
D)  both sexes are affected because new mutations occur frequently. 
E)  in any particular family, only one sex can be affected.

Question 6

Alleles are

Accepted Answer

A)  alternate forms of a gene. 
B)  genes near each other on a chromosome. 
C)  genes at opposite ends of a chromosome. 
D)  genes that are only in pea plants. 
E)  two genes that have the same effect on the phenotype. 
A)  alternate forms of a gene. 
B)  genes near each other on a chromosome. 
C)  genes at opposite ends of a chromosome. 
D)  genes that are only in pea plants. 
E)  two genes that have the same effect on the phenotype.

Question 7

Using the product rule,the probability that parents heterozygous for two traits (AaBb)produce an offspring homozygous recessive for the same two traits (aabb)is

Accepted Answer

A)  1/4. 
B)  1/8. 
C)  1/16. 
D)  1/24. 
E)  1/32. 
A)  1/4. 
B)  1/8. 
C)  1/16. 
D)  1/24. 
E)  1/32.

Question 8

A severe disease that is inherited as an autosomal recessive trait is more likely to skip generations in a pedigree than an autosomal recessive trait that causes a harmless phenotypic variant because

Accepted Answer

A)  all autosomal recessive traits skip generations. 
B)  a person with the harmless variant is less likely to reproduce than a person with the disease. 
C)  a person with an autosomal recessive disease is less likely to be well enough to reproduce than a person with a harmless trait variant. 
D)  all inborn errors of metabolism are dominant. 
E)  a family with an autosomal recessive disease is usually much smaller than a family with an autosomal recessive harmless trait variant. 
A)  all autosomal recessive traits skip generations. 
B)  a person with the harmless variant is less likely to reproduce than a person with the disease. 
C)  a person with an autosomal recessive disease is less likely to be well enough to reproduce than a person with a harmless trait variant. 
D)  all inborn errors of metabolism are dominant. 
E)  a family with an autosomal recessive disease is usually much smaller than a family with an autosomal recessive harmless trait variant.

Question 9

Mendel's laws derive from

Accepted Answer

A)  mitosis. 
B)  meiosis. 
C)  evolution. 
D)  processes unique to pea plants. 
E)  calculus and algebra. 
A)  mitosis. 
B)  meiosis. 
C)  evolution. 
D)  processes unique to pea plants. 
E)  calculus and algebra.

Question 10

Which of the following genotypes is homozygous?

Accepted Answer

A)  RrYY 
B)  RRYY 
C)  RryY 
D)  RrYy 
E)  Rryy 
A)  RrYY 
B)  RRYY 
C)  RryY 
D)  RrYy 
E)  Rryy

Question 11

The original pedigrees,used in France in the fifteenth century,resembled

Accepted Answer

A)  a moose's antlers. 
B)  a bird's foot. 
C)  a cactus plant. 
D)  a snake eating a frog. 
E)  an insect's antennae. 
A)  a moose's antlers. 
B)  a bird's foot. 
C)  a cactus plant. 
D)  a snake eating a frog. 
E)  an insect's antennae.

Question 12

Mode of inheritance reflects

Accepted Answer

A)  whether the gene is on an autosome or sex chromosome and whether the allele is recessive or dominant. 
B)  whether the allele is transmitted from the male or the female. 
C)  whether the allele is received by a male or a female. 
D)  the number of genes that determine a trait. 
E)  the size of the chromosome that includes the gene in question and the sex of the parent transmitting it. 
A)  whether the gene is on an autosome or sex chromosome and whether the allele is recessive or dominant. 
B)  whether the allele is transmitted from the male or the female. 
C)  whether the allele is received by a male or a female. 
D)  the number of genes that determine a trait. 
E)  the size of the chromosome that includes the gene in question and the sex of the parent transmitting it.

Question 13

Mendel followed the transmission of traits through several generations in

Accepted Answer

A)  fruit flies. 
B)  frogs. 
C)  peas. 
D)  bacteria. 
E)  the mustard weed. 
A)  fruit flies. 
B)  frogs. 
C)  peas. 
D)  bacteria. 
E)  the mustard weed.

Question 14

A person who has two identical alleles for a particular gene is _______ for that gene.

Accepted Answer

A)  recessive 
B)  mutant 
C)  dominant 
D)  heterozygous 
E)  homozygous 
A)  recessive 
B)  mutant 
C)  dominant 
D)  heterozygous 
E)  homozygous

Question 15

The wild type eye color for humans is

Accepted Answer

A)  brown. 
B)  blue. 
C)  green. 
D)  hazel. 
E)  pink. 
A)  brown. 
B)  blue. 
C)  green. 
D)  hazel. 
E)  pink.

Question 16

Jermaine and Shikia are healthy parents of three young children.The oldest two,Bethany and Amber,are healthy,and they are six and four,respectively.Their youngest child was born with Peeling Skin Syndrome two years ago.Roscoe's skin constantly peels,and is red and itchy.If Jermaine and Shikia have another child,the probability that he or she will inherit the skin condition is

Accepted Answer

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

Question 17

Genotype refers to

Accepted Answer

A)  the number of alleles of a gene that a person has. 
B)  the combination of alleles for a particular gene. 
C)  the person's entire genome sequence. 
D)  the appearance of a trait. 
E)  gene expression at a particular time. 
A)  the number of alleles of a gene that a person has. 
B)  the combination of alleles for a particular gene. 
C)  the person's entire genome sequence. 
D)  the appearance of a trait. 
E)  gene expression at a particular time.

Question 18

One reason that dominant diseases remain in populations is that

Accepted Answer

A)  they do not make people as sick as recessive illnesses. 
B)  they do not run in families. 
C)  they often do not produce symptoms until a person has already had children. 
D)  they affect more females than males. 
E)  they are more curable than recessive diseases. 
A)  they do not make people as sick as recessive illnesses. 
B)  they do not run in families. 
C)  they often do not produce symptoms until a person has already had children. 
D)  they affect more females than males. 
E)  they are more curable than recessive diseases.

Question 19

Hillary is 8 years old and has neuronal ceroid lipofuscinosis,also known as Batten disease.It is autosomal recessive.She was fine until age five,when she began to lose her vision and stumble.She had learning difficulties in school and was diagnosed at age six.Hillary may only live into her twenties,experiencing dementia and seizures.Her younger brother Jaden,age six,is healthy,as are her parents.The probability that Jaden is a heterozygote is

Accepted Answer

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

Question 20

The inheritance of eye color indicates that

Accepted Answer

A)  a single gene is the only factor that determines eye color. 
B)  many different genes determine eye color, each contributing to different degrees. 
C)  eye color is sensitive to what the mother ate while pregnant. 
D)  other characteristics, such as the texture at the back of the eye, can affect the phenotype. 
E)  a person's sex influences inheritance of eye color. 
A)  a single gene is the only factor that determines eye color. 
B)  many different genes determine eye color, each contributing to different degrees. 
C)  eye color is sensitive to what the mother ate while pregnant. 
D)  other characteristics, such as the texture at the back of the eye, can affect the phenotype. 
E)  a person's sex influences inheritance of eye color.

In a family that starts with you,your grandchildren would be the _______ generation.

For two traits A and B with two alleles each,the genotypes of the gametes that a heterozygote would produce are

Gregor Mendel is known for

Cystic fibrosis is autosomal recessive.This means that

Alleles are

Using the product rule,the probability that parents heterozygous for two traits (AaBb)produce an offspring homozygous recessive for the same two traits (aabb)is

A severe disease that is inherited as an autosomal recessive trait is more likely to skip generations in a pedigree than an autosomal recessive trait that causes a harmless phenotypic variant because

Mendel's laws derive from

Which of the following genotypes is homozygous?

The original pedigrees,used in France in the fifteenth century,resembled

Mode of inheritance reflects

Mendel followed the transmission of traits through several generations in

A person who has two identical alleles for a particular gene is _______ for that gene.

The wild type eye color for humans is

Genotype refers to

One reason that dominant diseases remain in populations is that

The inheritance of eye color indicates that

Overview of Genetics

Cells

Meiosis and Development

Beyond Mendels Law

Matters of Sex

Multifactorial Traits

Genetics of Behavior

DNA Structure and Replication

Gene Action: From Dna to Protein

Gene Expression and Epigenetics

Gene Mutation

Chromosomes

Constant Allele Frequencies

Changing Allele Frequencies

Human Ancestry

Genetics of Immunity

Genetics of Cancer

Genetic Technologies: Amplifying, Modifying, and Monitoring DNA

Genetic Testing and Treatment

Reproductive Technologies

Genomics

Filters

Exam 4: Single-Gene Inheritance

In a family that starts with you,your grandchildren would be the _______ generation.

For two traits A and B with two alleles each,the genotypes of the gametes that a heterozygote would produce are

Gregor Mendel is known for

Cystic fibrosis is autosomal recessive.This means that

Alleles are

Using the product rule,the probability that parents heterozygous for two traits (AaBb)produce an offspring homozygous recessive for the same two traits (aabb)is

A severe disease that is inherited as an autosomal recessive trait is more likely to skip generations in a pedigree than an autosomal recessive trait that causes a harmless phenotypic variant because

Mendel's laws derive from

Which of the following genotypes is homozygous?

The original pedigrees,used in France in the fifteenth century,resembled

Mode of inheritance reflects

Mendel followed the transmission of traits through several generations in

A person who has two identical alleles for a particular gene is _______ for that gene.

The wild type eye color for humans is

Genotype refers to

One reason that dominant diseases remain in populations is that

The inheritance of eye color indicates that

Overview of Genetics

Cells

Meiosis and Development

Beyond Mendels Law

Matters of Sex

Multifactorial Traits

Genetics of Behavior

DNA Structure and Replication

Gene Action: From Dna to Protein

Gene Expression and Epigenetics

Gene Mutation

Chromosomes

Constant Allele Frequencies

Changing Allele Frequencies

Human Ancestry

Genetics of Immunity

Genetics of Cancer

Genetic Technologies: Amplifying, Modifying, and Monitoring DNA

Genetic Testing and Treatment

Reproductive Technologies

Genomics

Filters