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Cell Reproduction & Heredity Review

Total questions: 60

Worksheet time: 43mins

Name
Class
Date
1.

Who is considered the "Father of Genetics?"

a)

Carolus Linneaus

b)

Francis Crick

c)

Gregor Mendel

d)

Chares Darwin

2.
True or False: Genetics is the scientific study of heredity.
a)
True
b)
False
3.

A __________ is a segment of DNA that codes for a particular protein, which leads to a particular trait.

a)

Gene

b)

chromosome

c)

Codon

d)

Nucleotide

4.
The different forms of a gene are known as _____________.
a)
Codons
b)
Proteins
c)
Alleles
d)
Nucleotides
5.

How many alleles do you get from each parent for a trait?

a)

1

b)

2

c)

23

d)

46

6.
Which of the following best describes a GENOTYPE?
a)
The allele/genetic makeup of an organism.
b)
The physical expression of a trait.
7.
Which of the following is an example of a GENOTYPE?
a)
25%
b)
Blue
c)
1:2:1
d)
Bb
8.
Which of the following is an example of a homozygous dominant genotype?
a)
RR
b)
Rr
c)
rr
9.
Which of the following is an example of a heterozygous genotype?
a)
RR
b)
Rr
c)
rr
10.
What is the FUNCTION of the visual tool seen in the image?
a)
Identifies the location of a gene.
b)
Determines the DNA sequence of an organism.
c)
Predicts the possible results of a genetic cross.
d)
Tests for the presence of dominant alleles.
11.
True or False: A phenotype describes the physical expression (characteristics) of a gene. In other words, how something looks.
a)
True
b)
False
12.
Geneticists use ___________ to represent _____________, the different forms of a gene.
a)
Numbers ; Alleles
b)
Letters ; Factors
c)
Letters ; Alleles
d)
Numbers ; Factors
13.
Fruit fly body cells have 8 chromosomes. After mitosis, you would expect a resulting fruit fly daughter cell to have ...
a)
16 chromosomes.
b)
46 chromosomes.
c)
8 chromosomes.
d)
4 chromosomes.
14.
The stages of mitosis in order
a)
Metaphase, Anaphase, Prophase, Telophase
b)
Prophase, Anaphase, Metaphase, Telophase
c)
Prophase, Metaphase, Anaphase, Telophase
d)
Anaphase, Prophase, Telophase, Metaphase
15.

Cells of organism must divide/replicate for:

a)

growth

b)

repair of damaged cells

c)

replacement of dying cells.

d)

All of the above

16.
Before cells can divide, what must be copied?
a)
mitochondria
b)
cytoplasm
c)
DNA
d)
Cell Wall
17.
The division of the nucleus is known as:
a)
Synthesis
b)
Mitosis
c)
G1
d)
G2
18.

Humans have ________ homologous pairs of chromosomes.

a)

21

b)

23

c)

46

d)

None of the above

19.

The cell spends most of it's life in ________________.

a)

mitosis

b)

cytokinesis

c)

interphase

d)

meiosis

20.
This produces 2 identical cells.
a)
mitosis
b)
meiosis
21.
Meiosis makes sperm and egg cells. In humans, sperm and egg cells each have _____ chromosomes. Therefore a fertilized human egg cell (sperm and egg cell combined) would create a cell with _____ chromosomes.
a)
23, 46
b)
46, 23
c)
2, 4
d)
50, 100
22.

Hibiscus plants have dominant alleles for being purple and recessive allele for being white. Using this Punnett Square, which of these statements is correct?

a)

The hibiscus plants will have a 25% chance of having a purple offspring

b)

The hibiscus plants will have a 50% chance of having a purple offspring

c)

The hibiscus plants will have a 75% chance of having a purple offspring

d)

The hibiscus plants will have a 100% chance of having a purple offspring

23.

T - tall and t = short

What genotype is missing in this Punnett square?

a)

tt

b)

Tt

c)

Bb

d)

TT

24.

What are the possible genotypes for this cross?

a)

TT = 25% Tt= 50% tt=25%

b)

75% tall 25% short

c)

TT= 75% tt = 25%

d)

Tt = 100%

25.

Paul and Penny want to have an a child but both parents have a family history of Cystic Fibrosis (represented by the letter f). Cystic Fibrosis is a RECESSIVE disorder. Looking at the Punnett square, which of the following is a claim you can make about Paul and Penny's offspring?

a)

Paul and Penny have a 25% chance of giving birth to a child with Cystic Fibrosis

b)

Paul and Penny have a 50% chance of giving birth to a child with Cystic Fibrosis

c)

Paul and Penny have a 75% chance of giving birth to a child with Cystic Fibrosis

d)

Paul and Penny will have all healthy children without any genetic disorders.

26.

Jen and Tony want to have an offspring, but both parents have a family history of Huntington's Disorder (represented by the letter T). Huntington's Disorder is a DOMINANT disorder. Looking at the Punnett square, which of the following is a claim you can make about Jen and Tony's chance of passing this disorder on?

a)

Jen and Tony have a 25% chance of giving birth to a child with Huntington's Disorder.

b)

Jen and Tony have a 50% chance of giving birth to a child with Huntington's Disorder.

c)

Jen and Tony have a 75% chance of giving birth to a child with Huntington's Disorder.

d)

Jen and Tony have a 100% chance of giving birth to a child with Huntington's Disorder.

27.

Paul(father) and Penny(mother) want to have an offspring, but both parents have a the Cystic Fibrosis gene (represented by the letter f). Cystic Fibrosis is a RECESSIVE disorder. Looking at the Punnett square, which of the following is a claim you can make about Paul and Penny's phenotype?

a)

Both Paul and Penny have cystic fibrosis because they have at least one copy of the recessive gene

b)

Both Paul and Penny have cystic fibrosis because they have at least one copy of the dominant gene

c)

Both Paul and Penny DO NOT have cystic fibrosis because they have at least one copy of the dominant gene

d)

Paul has cystic fibrosis but Penny does not.

28.

Red-green color blindness is associated with the _____ chromosome.

a)

X

b)

Y

c)

21st

29.

Females are more likely to be red/green colorblind.

a)

True

b)

False

30.

In the second generation-how many people are carriers of the trait?

a)

2

b)

3

c)

5

d)

6

31.
Why do all the daughters in Generation II carry the colorblind gene?
a)
Because mom passed on the gene.
b)
Because dad passed on the X chromosome.
c)
Because their brother has it.
d)
Because their brother gave it to them.
32.
Which individual in the first generation is a carrier?
a)
The male
b)
The female
c)
individual 1
d)
None of the above
33.

What is the mode of inheritance shown here?

a)

Recessive

b)

Sex-Linked

c)

Dominant

34.
An individual's blood type is determined by
a)
environment
b)
genetics
c)
both environment and genetics
d)
your children's blood type
35.
A red flowered plant (RR) is crossed with a white flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance.  What percentage of the offspring will have pink (RW) flowers?
a)
0%
b)
25%
c)
50%
d)
100%
36.
This is an example of ___________?
a)
Incomplete dominance
b)
Co-Dominance
37.

A tabby shows both the traits for tan fur and black fur side-by-side. What kind of allele expression is this?

a)

Incomplete Dominance

b)

Codominance

c)

polygenic inheritance

38.

A dog is taught the command to sit. This is an example of a characteristic that is:

a)

inherited

b)

acquired

39.

Is this purple hair color an example of an inherited or acquired trait?

a)

inherited

b)

acquired

40.

A spider knowing how to spin a web-- inherited or acquired characteristic?

a)

inherited

b)

acquired

41.

A baby crying when its hungry-- inherited or acquired characteristic?

a)

inherited

b)

acquired

42.

Speaking different languages- inherited or acquired characteristic?

a)

inherited

b)

acquired

43.
The purpose of selective breeding is to 
a)
Get bigger animals
b)
get smaller animals
c)
create animals with desirable traits
d)
create animals with bad traits
44.
The process whereby organisms better adapted to their environment tend to survive and produce more offspring.
a)
Natural Selection
b)
Selective Breeding
c)
Commensalism
d)
Genetic superiority
45.
The process by which humans choose a plant or animal to breed based on specific traits.
a)
Adaptation
b)
Hybrid 
c)
Selective Breeding
d)
Artificial Fertilization
46.
Giraffes with tall necks are an example of:
a)
natural selection
b)
selective breeding
47.

Adding genes to wheat DNA to make it drought tolerant & insect repelling is an example of:

a)

natural selection

b)

selective breeding

c)

genetic engineering

48.
Woodpecker's long beaks are an example of:
a)
natural selection
b)
selective breeding
49.
Making changes in the DNA of an organism is
a)
selective breeding
b)
artificial selection
c)
genetic engineering
d)
genetic transformation
50.
What is the ultimate source of genetic variability
a)
inbreeding
b)
hybridization
c)
mutations
d)
radiation
51.
Determine the sex of the individual whose karyotype is displayed in the image.
a)
female
b)
male
52.

Down's Syndrome occurs because of a(n)

a)

missing sex chromosome

b)

extra sex chromosome

c)

additional 21st chromosome

53.

The offspring of a plant that reproduces asexually will:

a)

share all of the parent's characteristics

b)

be incapable of producing flowers

c)

develop fruit even if the parent did not

d)

fail to grow and develop normally

54.

How many alleles are there for human blood type?

a)

2

b)

3

c)

4

d)

6

55.

John and his mother have blue eyes. His brother, sister and father all have brown eyes. John is often told that he "has his mother's eyes." How can this trait be characterized?

a)

It is an adaptation.

b)

It is environmental.

c)

It is inherited.

d)

It is acquired.

56.

Genes are responsible for:

a)

all traits of an organism

b)

no traits of an organism

c)

all inherited traits of an organism

d)

all acquired traits of an organism

57.

A scientist studying zebra fish discovers a population in which two of the fish are white and do not have stripes; the scientist believes that that white color is due to environmental exposure to a chemical (not genetics) and wants to test his hypothesis. Which of the following test results would support the scientist's explanation?

a)

Breeding the two fish with white color together resulted in three white offspring.

b)

Exposing another group of fish to the chemical did not results in any white fish.

c)

Breeding the two fish with the white color together resulted in only typically striped offspring.

d)

Breeding a striped fish with a white fish resulted in only typically striped offspring.

58.

Which of these is an example of something inherited via polygenic inheritance?

a)

Cystic Fibrosis

b)

blood type

c)

tabby cat coat color

d)

human eye color

59.
All of the following statements are reasons for selective breeding except:
a)
To produce offspring with desirable characteristics
b)
Farmers increase their profit by improving crops
c)
To improve the quality of food products
d)
To increase migration patterns
60.

Mutations are a change in what?

a)

DNA

b)

codiminance

c)

genotype

d)

phenotype

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