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PQ: Unit 5

Total questions: 76

Worksheet time: 49mins

Name
Class
Date
1.

How many alleles does a child get from each parent for a trait?

a)

1

b)

2

c)

3

d)

4

2.

The trait this pedigree traces is recessive because it skips a generation and individuals can be carriers. What is the most likely genotype for person III-3?

a)

GG

b)

Gg

c)

gg

3.
If this pedigree shows an autosomal recessive disorder, what MUST the genotype of individual II-3 be?
a)
HH
b)
Hh
c)
hh
d)
None of the above
4.

If this pedigree shows a recessive disorder, what MUST the genotype of individual 4 be?

a)

HH

b)

Hh

c)

hh

5.
Does this pedigree show a dominant or recessive trait?
a)
Dominant
b)
Recessive
6.

How is the trait show in the pedigree passed on?

a)

As a dominant trait

b)

As a recessive trait

7.

Ends with diploid number of chromosomes

a)

Mitosis

b)

Meiosis

c)

Both

8.

Involves crossing over

a)

Mitosis

b)

Meiosis

c)

Both

9.

Produces four cells

a)

Mitosis

b)

Meiosis

c)

Both

10.

forms gametes

a)

Mitosis

b)

Meiosis

c)

Both

11.
the two halves of the doubled chromosome structure 
a)
centromeres
b)
sister chromatids
c)
spindle
d)
tissues
12.
The process of crossing over occurs in what phase of meiosis?
a)
anaphase 1
b)
prophase 1
c)
prophase 2
d)
telophase 1
13.
This picture shows which process? 
a)
mitosis
b)
meiosis
c)
the cell cycle
14.
What phase is represented?
a)
metaphase 1
b)
metaphase 2
c)
anaphase 1
d)
anaphase 2
15.

During anaphase I

a)

sister chromatids separate

b)

homologous pairs meet in the middle

c)

homologous pairs separate

d)

sister chromatids meet in the middle

16.

During anaphase II

a)

sister chromatids separate

b)

homologous pairs meet in the middle

c)

homologous pairs separate

d)

sister chromatids meet in the middle

17.

Based on the observed numbers, the gene for body color and eye color must be...

a)

autosomal

b)

linked

c)

sex-linked

d)

dominant

18.
In mice, the homozygous mice are black and white. The heterozygous mice are gray. What pattern of inheritance is expressed in fur color in mice?
a)
complete dominance and recessiveness
b)
co-dominance
c)
incomplete dominance
d)
pleiotropy
19.
What gamete possibilities could come from this parent's genotype?
a)
AB, AB, aB, aB
b)
Ab, AB, Ab, ab
c)
Ab, Ab, Ab, Ab
d)
AB, aB, ab, aB
20.

If the parents of a cross are AaBb x aaBB What is the probability of an offspring that is heterozygous for both genes?

a)

1/2

b)

1/8

c)

1/4

d)

1/16

21.
If a female was a carrier for sex-linked color blindness, what percentage of her male children would also be color blind?
a)
0%
b)
25%
c)
50%
d)
100%
22.
If the parents of a cross are AaBcCc x aaBBcc. What is the probability of an offspring that is homozygous recessive for all 3 traits?
a)
1/64
b)
1/32
c)
1/8
d)
O
23.

Within a forest ecosystem, there is a large amount of diversity among members of a warbler species. Of the following stages of meiosis illustrated for a typical cell, which contributes most to diversity among the warblers?

a)
b)
c)
d)
24.

Achondroplastic dwarfism is a dominant genetic trait that causes severe malformation of the skeleton. Homozygotes for this condition are spontaneously aborted (hence, the homozygous condition is lethal) but heterozygotes will develop to be dwarfed.

Matthew has a family history of the condition, although he does not express the trait. Jane is an achondroplastic dwarf. Matthew and Jane are planning a family of several children and want to know the chances of producing a child with achondroplastic dwarfism.


The genotypes of Matthew and Jane are best represented as

a)

Matthew - AA / Jane - Aa

b)

Matthew - Aa / Jane - aa

c)

Matthew - aa / Jane - aa

d)

Matthew - aa / Jane - Aa

25.

Gregor Mendel was experimenting with peas and exploring the basics of genetics. He knew that green (G) is dominant over yellow (g) peas. In one experiment, he crossed a heterozygous green pea with a homozygous yellow pea. In the F1 generation he obtained a total of 200 peas out of which 105 were green and 95 were yellow.


a. Calculate the chi-square to the nearest tenth.

b. Is the difference between the observed and expected data significant?

c. Explain if the null hypothesis can be kept or rejected.

a)

x2 = 0.5; Yes; Null hypothesis can be rejected because chi-square is greater than the critical value of 3.84.

b)

x2 = 4.5; Yes; Null hypothesis can be kept because chi-square is less than the critical value of 3.84.

c)

x2 = 2; No; Null hypothesis can be kept because chi-square is less than the critical value of 3.84.

d)

x2 = 0.5; No; Null hypothesis can be kept because chi-square is less than the critical value of 3.84.

e)

x2 = 2.7; Yes; Null hypothesis can be kept because chi-square is less than the critical value of 3.84.

26.

Meiosis results in _____________ because there is/are _______________.

a)

2 identical haploid cells, 1 round of division

b)

4 identical diploid cells, 2 rounds of division

c)

4 unique haploid cells, 2 rounds of division

d)

2 unique diploid cells, 1 round of division

27.

Which of the following does NOT increase variation in gamete formation?

a)

crossing over

b)

fertilization of gametes

c)

random assortment of chromosomes

d)

condensation of chromatin

28.

Which of the following does NOT support the concept of common ancestry for all organisms?

a)

DNA/RNA (genetic code) are shared by all living systems

b)

Ribosomes are found in all forms of life

c)

Glycolysis takes place in all organisms

d)

All organisms undergo sexual reproduction

29.

Which of the following best describes the inheritance pattern of the shown pedigree?

a)

Autosomal Dominant

b)

Sex-Linked Dominant

c)

Autosomal Recessive

d)

Sex-Linked Recessive

30.

Describe the cause of a cross resulting in greater than 50% parental phenotypes and less then 50% recombinant phenotypes

a)

Genes are linked on the same chromosome

b)

Genes are located on different arms of the same chromosome

c)

Gene are on different chromosomes

d)

Gene are found in different gametes

31.

In animals, traits determine by the mitochondrial DNA are inherited from the _______________.

a)

mother

b)

brother

c)

father

d)

sister

32.

Identify the type of inheritance of the pedigree.

a)

Sex-Linked

b)

Mitochondrial

c)

Autosomal

d)

Random

33.

Snowshoe hares are brown in summer and white in winter, describe this event.

a)

Hares undergo phenotypic plasticity & environment influences gene express

b)

Hares are white in winter due to the snow binding to hair follicles

c)

Hares are brown from exposed dirt in summer

d)

Hares remain hidden in the winter months inhibiting fur darken from sun

34.

Describe the process of nondisjunction.

a)

Homologous chromosomes exchange genetic information

b)

The alignment of the chromosomes on the metaphase plate

c)

Homologous chromosomes or sister chromatids remain attached during anaphase

d)

The process of sperm and egg fusing to create a zygote

35.

When does the process of independent assortment take place?

a)

prophase I

b)

metaphase I

c)

anaphase I

d)

telophase I

36.

What phase of meiosis describes the law of segregation?

a)

telophase I

b)

anaphase I

c)

telophase II

d)

anaphase II

37.

Which of the following is a predicted ratio of a dihybrid cross made of heterozygous parents for both genes?

a)

9:3:3:1

b)

9:3:4

c)

1:2:1

d)

1:1:1:1

38.

Describe why a male is more likely to be affected by a sex-linked trait?

a)

Males have only 1 Y chromosome

b)

Females have only 1 Y chromosome

c)

Males have only 1 X chromosome

d)

Females have only 1 X chromosomes

39.

Meiosis results in _____________ because there is/are _______________.

a)

2 identical haploid cells, 1 round of division

b)

4 identical diploid cells, 2 rounds of division

c)

4 unique haploid cells, 2 rounds of division

d)

2 unique diploid cells, 1 round of division

40.

Which of the following does NOT increase variation in gamete formation?

a)

crossing over

b)

fertilization of gametes

c)

random assortment of chromosomes

d)

condensation of chromatin

41.

This process involves homologous chromatids exchanging genetic material to increase genetic diversity.

a)

crossing over

b)

random fertilization

c)

independent assortment

d)

gene flow

42.

Which of the following does NOT support the concept of common ancestry for all organisms?

a)

DNA/RNA (genetic code) are shared by all living systems

b)

Ribosomes are found in all forms of life

c)

Glycolysis takes place in all organisms

d)

All organisms undergo sexual reproduction

43.

Which of the following best describes the inheritance pattern of the shown pedigree?

a)

Autosomal Dominant

b)

Sex-Linked Dominant

c)

Autosomal Recessive

d)

Sex-Linked Recessive

44.

Describe the cause of a cross resulting in greater than 50% parental phenotypes and less then 50% recombinant phenotypes

a)

Genes are linked on the same chromosome

b)

Genes are located on different arms of the same chromosome

c)

Gene are on different chromosomes

d)

Gene are found in different gametes

45.

In animals, traits determine by the mitochondrial DNA are inherited from the _______________.

a)

mother

b)

brother

c)

father

d)

sister

46.

Identify the type of inheritance of the pedigree.

a)

Sex-Linked

b)

Mitochondrial

c)

Autosomal

d)

Random

47.

Snowshoe hares are brown in summer and white in winter, describe this event.

a)

Hares undergo phenotypic plasticity & environment influences gene express

b)

Hares are white in winter due to the snow binding to hair follicles

c)

Hares are brown from exposed dirt in summer

d)

Hares remain hidden in the winter months inhibiting fur darken from sun

48.

Describe the process of nondisjunction.

a)

Homologous chromosomes exchange genetic information

b)

The alignment of the chromosomes on the metaphase plate

c)

Homologous chromosomes or sister chromatids remain attached during anaphase

d)

The process of sperm and egg fusing to create a zygote

49.

When does the process of independent assortment take place?

a)

prophase I

b)

metaphase I

c)

anaphase I

d)

telophase I

50.

When does the process of crossing over take place?

a)

prophase I

b)

metaphase I

c)

anaphase I

d)

telophase I

51.

What phase of meiosis describes the law of segregation?

a)

telophase I

b)

anaphase I

c)

telophase II

d)

anaphase II

52.

Which of the following is a predicted ratio of a dihybrid cross?

a)

9:3:3:1

b)

9:3:4

c)

1:2:1

d)

1:1:1:1

53.

Describe why a male is more likely to be affected by a sex-linked trait?

a)

Males have only 1 Y chromosome

b)

Females have only 1 Y chromosome

c)

Males have only 1 X chromosome

d)

Females have only 1 X chromosomes

54.

Phase involving microtubules to separate sister chromatids to opposite poles of cell

a)

Anaphase

b)

Metaphase

c)

Prophase

d)

Telophase

55.

Phase involving sister chromatids aligning on plate in middle of cell

a)

Anaphase

b)

Metaphase

c)

Prophase

d)

Telophase

56.

Phase involving pairing of sister chromatids and condensation of chromatin into chromosomes

a)

Anaphase

b)

Metaphase

c)

Prophase

d)

Telophase

57.

Phase involving formation of nuclear envelope around separated chromosomes

a)

Anaphase

b)

Metaphase

c)

Prophase

d)

Telophase

58.

Which checkpoint involves ensuring all DNA has been replicated and "no" errors exist?

a)

G1

b)

G2

c)

M

d)

S

59.

Which checkpoint involves determining whether the cell should divide?

a)

G1

b)

G2

c)

M

d)

S

60.

Which of the following occurs BEFORE the process of mitosis?

a)

Sister chromatids pair up

b)

DNA is replicated

c)

Chromatin is condensed to chromosomes

d)

Cytoplasm is divided between two cells

61.

Which of the following describes the order of processes in the cell cycle?

a)

Interphase, Prophase, Metaphase, Anaphase, Telophase, Cytokinesis

b)

Prophase, Metaphase, Interphase, Anaphase, Telophase, Cytokinesis

c)

Interphase, Metaphase, Anaphase, Prophase, Cytokinesis, Telophase

d)

Prophase, Anaphase, Metaphase, Interphase, Cytokinesis, Telophase

62.

Which of the following describes the result of mitosis?

a)

2 identical, haploid cells

b)

4 non-identical haploid cells

c)

2 identical, diploid cells

d)

4 non-identical, diploid cells

63.

What is the result of meiosis?

a)

2 haploid unique cells

b)

2 diploid identical cells

c)

4 haploid unique cells

d)

4 diploid identical cells

64.

When does crossing over occur?

a)

Prophase I

b)

Metaphase I

c)

Anaphase I

d)

Telophase I

65.

When does independent assortment occur?

a)

Prophase I

b)

Metaphase I

c)

Anaphase I

d)

Telophase I

66.

During meiosis I, which of the following are paired, aligned, and separated?

a)

homologous chromosomes

b)

sister chromatids

c)

kinetochore microtubules

d)

signaling molecules

67.

During meiosis II, which of the following are paired, aligned, and separated?

a)

homologous chromosomes

b)

sister chromatids

c)

kinetochore microtubules

d)

signaling molecules

68.

How does mitosis and meiosis differ?

a)

mitosis has 1 round of replication and 2 rounds of division while meiosis has 1 round of replication and 1 round of division

b)

mitosis has 1 round of replication and 1 round of division while meiosis has 1 round of replication and 2 rounds of division

c)

mitosis has 1 round of replication and 1 round of division while meiosis has 2 rounds of replication and 2 rounds of division

d)

mitosis has 2 rounds of replication and 2 rounds of division while meiosis has 1 round of replication and 1 round of division

69.

At the end of telophase I, the resulting daughter cells are?

a)

haploid

b)

diploid

70.

Which of the following resulted from nondisjunction?

a)

Three copies of chromosome 21

b)

Three copies of all chromosomes

c)

Two copies of all chromosomes

d)

Two copies of chromosome 21

71.

When observing a karyotype, how can one determine that a case of nondisjunction occurred?

a)

There are two sets of all chromosomes

b)

There is only one of an autosomal chromosome

c)

There are two X chromosomes.

d)

There is a only one X and Y chromosome.

72.

A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?

a)

Incomplete Dominance

b)

Codominance

c)

Independent assortment

d)

Recessive inheritance

73.

A red flowered plant (RR) is crossed with a white flowered plant (rr). The gene for petal color in these plants expresses incomplete dominance. What percentage of the offspring will have pink (Rr) flowers?

a)

0%

b)

25%

c)

50%

d)

100%

74.

What are the chances that the offspring will have homozygous recessive traits?

a)

1 in 4

b)

3 out of 4

c)

75%

d)

50%

75.
How many boxes would say BB?
a)
1
b)
2
c)
4
d)
0
76.
I have 1 X chromosome and 1 Y chromosome. What am I?
a)
Male
b)
Female

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