Download Q2 Genetics Review Part 2

Genetics Practice Questions
Standard 2d: Mendel concluded that the alleles for
tall stems in pea plants are dominant. Thus, crossing a
purebred tall pea plant with a purebred short pea plant
should result in
A all tall plants.
B all short plants.
C all medium height
plants.
D half short and half
tall plants.
Standard 2d: Mendel concluded that the alleles for
tall stems in pea plants are dominant. Thus, crossing a
purebred tall pea plant with a purebred short pea plant
should result in
Answer:
A all tall plants.
Standard 2d: In the Punnett Square below,
what percentage of the offspring will have
purple flowers?
A
B
C
D
25%
50%
75%
100%
Standard 2d: In the Punnett Square above,
what percentage of the offspring will have
purple flowers?
Answer:
A 25%
Standard 2d: In the Punnett Square below, what
percentage of the offspring are capable of
passing on either the trait for white flowers or
the trait for purple flowers to their offspring?
A
B
C
D
25%
50%
75%
100%
Standard 2d: In the Punnett Square below, what
percentage of the offspring are capable of
passing on either the trait for white flowers or
the trait for purple flowers to their offspring?
Answer:
B 50%
because Ww can
pass on a W (white
flower gene) or a w
(purple flower gene)
Standard 2c: Some people have hair on the middle
segment of each finger and some people do not. This
characteristic is under genetic control. Which of the
following statements is true?
A The hair results from a
mutation.
B Each person has two
or more alleles for this
trait.
C The genes that cause
this trait are
codominant.
D The genes that cause
this trait are unknown.
Standard 2c: Some people have hair on the middle
segment of each finger and some people do not. This
characteristic is under genetic control. Which of the
following statements is true?
Answer:
B Each person has two
or more alleles for
this trait.
Standard 2e: The diagram shows
A
B
C
D
DNA.
RNA.
proteins.
ribosomes.
Standard 2e: The diagram shows
Answer:
A DNA.
Standard 2d: Scientists call an organism that
has two different alleles for a trait (Tt)
A
B
C
D
a hybrid.
homozygous.
purebred.
a factor.
Standard 2d: Scientists call an organism that
has two different alleles for a trait (Tt)
Answer:
A a hybrid.
Standard 2e: What is DNA?
A an energy-rich organic
compound made of
carbon, hydrogen, and
oxygen
B a drug that slows down
the activity of the central
nervous system
C the genetic material that is
passed from parent to
offspring
D the region of a cell located
inside the cell membrane
in prokaryotes
Standard 2e: What is DNA?
Answer:
C the genetic material
that is passed from
parent to offspring
Standard 2e: Which of the following is made up of
strands of DNA?
A
B
C
D
allele
chromosome
gene
nucleus
Standard 2e: Which of the following is made up of
strands of DNA?
Answer:
B chromosome
Standard 2e: Which of the following are found in the
nucleus of a cell?
A
B
C
D
chloroplasts
chromosomes
Golgi apparatus
mitochondria
Standard 2e: Which of the following are found in the
nucleus of a cell?
Answer:
B chromosomes
Standard 2b: At the end of mitosis, chromosomes
provide each daughter cell with
A
B
C
D
half the parent’s genetic material.
an exact copy of the parent’s genetic material.
twice the amount of the parent’s genetic material.
four times the amount of the parent’s genetic material.
Standard 2b: At the end of mitosis, chromosomes
provide each daughter cell with
Answer:
B an exact copy of the parent’s
genetic material.
Standard 2e: As a result of mitosis in a human body
cell, each of the two nuclei formed has which of the
following?
A
B
C
D
12 chromosomes
92 chromosomes
23 chromosomes
46 chromosomes
Standard 2e: As a result of mitosis in a human body
cell, each of the two nuclei formed has which of the
following?
Answer:
D 46 chromosomes
Standard 2e: Down Syndrome is a genetic condition
caused by an extra #21 chromosome, giving a person
an abnormal total of 47 chromosomes.
Standard 2d: Given:
Widow’s peak is dominant (W)
No widow’s peak is recessive (w)
What would be the phenotype of a child that has Ww?
A
B
C
D
widow’s peak
no widow’s peak
male
female
Standard 2d: Given:
Widow’s peak is dominant (W)
No widow’s peak is recessive (w)
What would be the phenotype of a child that has Ww?
Answer:
A widow’s peak