Genetics Final Exam Questions And
Correct Solutions| Updated
Gregor Mendel was:
a) an English scientist who carried out research with Charles Darwin
b) a little known Central European monk
c) an early 20th century Dutch biologist who carried out genetics research -
Ans--B
Which of the following statements is true about Mendel?
a) His discoveries concerning genetic inheritance were generally accepted
by the scientific community when he published them during the mid 19th
century.
b) He believed that genetic traits of parents will usually blend in their
children.
c) His ideas about genetics apply equally to plants and animals. - Ans--C
Mendel believed that the characteristics of pea plants are determined by
the:
a) inheritance of units or factors from both parents
b) inheritance of units or factors from one parent
c) relative health of the parent plants at the time of pollination - Ans--A
An allele is:
a) another word for a gene
b) a homozygous genotype
c) a heterozygous genotype
d) one of several possible forms of a gene - Ans--D
Phenotype refers to the ______________________ of an individual.
a) genetic makeup
b) actual physical appearance
c) recessive alleles - Ans--B
When the genotype consists of a dominant and a recessive allele, the
phenotype will be like _________________ allele.
,a) the dominant
b) the recessive
c) neither - Ans--A
Assuming that both parent plants in the diagram below are homozygous,
why would all of the f1 generation have yellow phenotypes?
Help Getting Started
diagram showing the result of cross-pollination in the first 2 offspring
generations--in generation f1 all are yellow peas but in generation f2 the
ratio of yellow to green peas is 3 to 1
a) because the f1 genotypes are homozygous
b) because yellow is dominant over green
c) because both parents passed on yellow alleles - Ans--B
The idea that different pairs of alleles are passed to offspring independently
is Mendel's principle of:
a) unit inheritance
b) segregation
c) independent assortment - Ans--C
In the diagram below, what accounts for the green pea seed in the f2
generation?
Help Getting Started
diagram showing the result of cross-pollination in the first 2 offspring
generations--in generation f1 all are yellow peas but in generation f2 the
ratio of yellow to green peas is 3 to 1
a) On average, 1 out of 4 offspring of heterozygous parents will be
homozygous recessive.
b) The yellow allele is dominant over the green one.
c) The f1 generation parents are homozygous yellow. - Ans--A
The idea that for any particular trait, the pair of alleles of each parent
separate and only one allele from each parent passes to an offspring is
Mendel's principle of:
a) independent assortment
b) hybridization
c) segregation - Ans--C
, Two identical parental generations with a yellow smooth phenotype are
crossed. The offspring include the following phenotypes: yellow smooth,
yellow wrinkled, green smooth, and green wrinkled. This is an example of?
a. a monohybrid cross
b. a pure-breeding line
c. a recombinant type
d. a late-onset condition
e. Quadhybrid cross - Ans--C
What are the two basic rules of probability?
A) The Product Rule
B) The Law of Segregation
C) The Sum Rule
D) Both A and B
E) All of the above - Ans--D
Which explains the Law of Independent assortment?
A) Mating between the F1 progeny of true-breeding parents that differed in
three or more unrelated traits
B) During gamete formation, different pairs of articles segregate
independently of each other
C) The random distribution of different genes during gamete formation
D) The genetic engineering technique that modifies the DNA of germ cells
that are passed on to progeny - Ans--B
What two tools are considered to be a more efficient method of the analysis
of genetic crossing that involves two or more genes?
A) Punnett Square and Branched-line diagrams
B) Direct calculation of probabilities and Punnett squares
C) Branched-line diagrams and Direct Calculation of probabilities
D) None of the above - Ans--C
If and individual is affected by a rare recessive trait, what likely occurred for
this to happen?
A) Something went wrong when the egg and sperm connected
B) The affected individual is the product of a consanguineous mating
C) It was already a trait in the ancestor line
D) None of that person's ancestors displayed the same trait
Correct Solutions| Updated
Gregor Mendel was:
a) an English scientist who carried out research with Charles Darwin
b) a little known Central European monk
c) an early 20th century Dutch biologist who carried out genetics research -
Ans--B
Which of the following statements is true about Mendel?
a) His discoveries concerning genetic inheritance were generally accepted
by the scientific community when he published them during the mid 19th
century.
b) He believed that genetic traits of parents will usually blend in their
children.
c) His ideas about genetics apply equally to plants and animals. - Ans--C
Mendel believed that the characteristics of pea plants are determined by
the:
a) inheritance of units or factors from both parents
b) inheritance of units or factors from one parent
c) relative health of the parent plants at the time of pollination - Ans--A
An allele is:
a) another word for a gene
b) a homozygous genotype
c) a heterozygous genotype
d) one of several possible forms of a gene - Ans--D
Phenotype refers to the ______________________ of an individual.
a) genetic makeup
b) actual physical appearance
c) recessive alleles - Ans--B
When the genotype consists of a dominant and a recessive allele, the
phenotype will be like _________________ allele.
,a) the dominant
b) the recessive
c) neither - Ans--A
Assuming that both parent plants in the diagram below are homozygous,
why would all of the f1 generation have yellow phenotypes?
Help Getting Started
diagram showing the result of cross-pollination in the first 2 offspring
generations--in generation f1 all are yellow peas but in generation f2 the
ratio of yellow to green peas is 3 to 1
a) because the f1 genotypes are homozygous
b) because yellow is dominant over green
c) because both parents passed on yellow alleles - Ans--B
The idea that different pairs of alleles are passed to offspring independently
is Mendel's principle of:
a) unit inheritance
b) segregation
c) independent assortment - Ans--C
In the diagram below, what accounts for the green pea seed in the f2
generation?
Help Getting Started
diagram showing the result of cross-pollination in the first 2 offspring
generations--in generation f1 all are yellow peas but in generation f2 the
ratio of yellow to green peas is 3 to 1
a) On average, 1 out of 4 offspring of heterozygous parents will be
homozygous recessive.
b) The yellow allele is dominant over the green one.
c) The f1 generation parents are homozygous yellow. - Ans--A
The idea that for any particular trait, the pair of alleles of each parent
separate and only one allele from each parent passes to an offspring is
Mendel's principle of:
a) independent assortment
b) hybridization
c) segregation - Ans--C
, Two identical parental generations with a yellow smooth phenotype are
crossed. The offspring include the following phenotypes: yellow smooth,
yellow wrinkled, green smooth, and green wrinkled. This is an example of?
a. a monohybrid cross
b. a pure-breeding line
c. a recombinant type
d. a late-onset condition
e. Quadhybrid cross - Ans--C
What are the two basic rules of probability?
A) The Product Rule
B) The Law of Segregation
C) The Sum Rule
D) Both A and B
E) All of the above - Ans--D
Which explains the Law of Independent assortment?
A) Mating between the F1 progeny of true-breeding parents that differed in
three or more unrelated traits
B) During gamete formation, different pairs of articles segregate
independently of each other
C) The random distribution of different genes during gamete formation
D) The genetic engineering technique that modifies the DNA of germ cells
that are passed on to progeny - Ans--B
What two tools are considered to be a more efficient method of the analysis
of genetic crossing that involves two or more genes?
A) Punnett Square and Branched-line diagrams
B) Direct calculation of probabilities and Punnett squares
C) Branched-line diagrams and Direct Calculation of probabilities
D) None of the above - Ans--C
If and individual is affected by a rare recessive trait, what likely occurred for
this to happen?
A) Something went wrong when the egg and sperm connected
B) The affected individual is the product of a consanguineous mating
C) It was already a trait in the ancestor line
D) None of that person's ancestors displayed the same trait
