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Genetics Unit Review

Total questions: 57

Worksheet time: 1hrs 25mins

Name
Class
Date
1.
What do the letters in each box of a Punnett square tell you?
a)
how to assemble a genetic map of the chromosome on which the alleles are located
b)
the full pedigree of a species
c)
that both parents show characteristics of the dominant trait
d)
the possible combinations of alleles in offspring based on the parents' genetic makeup
2.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
3.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
4.
Which answer best describes codominant alleles?
a)
Both are equally dominant
b)
Both are equally recessive
c)
Neither are dominant or recessive
5.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
6.
What is a gene?
a)
A bundle (like a hot dog bun) that the DNA is packed into
b)
something inside the nucleus
c)
a piece of DNA
d)
all of your DNA
7.
What is a capital letter used to represent?
a)
Recessive allele
b)
Homozygous
c)
Heterozygous
d)
Dominant allele
8.
Who is the "Father of Genetics"?
a)
Gregor Mendel
b)
Reginald Punnett
c)
Albert Einstein
d)
Carolus Linneaus
9.
If Tall (T) is dominant, what is the recessive trait?
a)
Medium (m)
b)
Regular (r)
c)
Tall (t)
d)
Short (t)
10.
Person II-1 and II-3 are ____________.
a)
Cousins
b)
Sisters
c)
Brothers
d)
Not related
11.
What do these 2 shapes represent?
a)
Deceased individuals on a pedigree
b)
Married individuals on a pedigree
c)
Carriers on a pedigree
d)
Affected Homozygous individuals on a pedigree
12.
What letters are used to represent female chromosomes?
a)
XX
b)
XY
c)
FF
d)
YY
13.
Which gamete controls what gender the offspring will be?
a)
Egg
b)
22nd Chromosome
c)
Nothing
d)
Male
14.
True or False: The Y chromosome carries more traits than the X chromosome.
a)
True
b)
False
15.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
16.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
17.
Aa is
a)
homozygous
b)
heterozygous
18.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
19.
What gender has an X and a Y chromosome?
a)
male
b)
female
c)
transgender 
d)
all of the above
20.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond
21.
Which of the following is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
22.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
23.
What chromosome is affected by Down's Syndrome?
a)
23
b)
18
c)
13
d)
21
24.
Which of the following makes the body not able to clot the blood properly?
a)
Hyperactivity
b)
sickle cell anemia
c)
achondroplasia
d)
hemophilia
25.
Passing of traits from parent to offspring
a)
Genetics
b)
Heredity
c)
Genotype
d)
Phenotype
26.
Letters that represent genes for a trait:
RR, Rr, rr
a)
Genetics
b)
Punnett Square
c)
Genotype
d)
Phenotype
27.
Physical appearance for a trait:
tall/short
purple/red
a)
Genetics
b)
Punnett Square
c)
Genotype
d)
Phenotype
28.
Blending of traits
a)
Codominance
b)
Incomplete Dominance
c)
Mendelian trait
d)
Sex-links
29.

How many parents are required for asexual reproduction?

a)

none

b)

1

c)

2

d)

4

30.

How do bacteria reproduce?

a)

mitosis

b)

budding

c)

binary fission

d)

regeneration

31.

What is one advantage of asexual reproduction?

a)

offspring are different from parents

b)

diseases are not passed from parent to offspring

c)

it takes a longer time

d)

it takes less time

32.

Which organisms reproduce by budding? Click all that apply.

a)

hydra

b)

earthworm

c)

bacteria

d)

yeast cells

33.

How many parents are involved with sexual reproduction?

a)

none

b)

1

c)

2

d)

4

34.

What cells undergo mitosis? Click all that apply.

a)

blood cells

b)

bone cells

c)

human sperm cells

d)

human egg cells

35.

What is an advantage of sexual reproduction?

a)

it is a faster process

b)

negative traits of parents may not always be passed to offspring

c)

it takes more energy and time

d)

finding a mate is necessary

36.

Mark all that are examples of asexual reproduction.

a)

mitosis

b)

budding

c)

regeneration

d)

meiosis

37.

What organisms reproduce by regeneration? Mark all that apply.

a)

ameba

b)

starfish

c)

lizard

d)

mosquito

38.

When a new organism grows by mitosis and cell division on the body of its parent:

a)

fission

b)

budding

c)

cloning

d)

regeneration

39.

When one parent organism produces offspring without meiosis and fertilization:

a)

asexual reproduction

b)

sexual reproduction

40.

What organism reproduces using fission?

a)

coral

b)

strawberries

c)

bacteria

d)

sea star

41.

The nucleus contains the cells genetic material in the form of

a)

RNA

b)

DNA

c)

ATP

42.

Which of these is a characteristic of sexual reproduction?

a)

It forms exact copies of the parent cell.

b)

It results in offspring with genetic variation.

c)

It requires only one parent to form a daughter cell.

43.

Plant and animal cells make exact copies through the process of

a)

meiosis

b)

segmentation

c)

mitosis

44.

RR represents the _________ of the organism.

a)

appearance

b)

chromosomes

c)

phenotype

d)

genotype

45.

An organism with 24 chromosomes in each body cell will produce sex cells with __________ chromosomes.

a)

24

b)

48

c)

36

d)

12

46.

Rr represents a

a)

homozygous genotype.

b)

homozygous phenotype.

c)

heterozygous genotype

47.

Which best explains why children often look like their parents?

a)

Traits, or characteristics, are passed on to offspring from parents.

b)

Babies begin to look like their parents as their features start to mature.

c)

Babies form physical features similar to people they are around most often.

48.
What does a filled in square represent?
a)
Not affected Female
b)
Not affected Male
c)
Affected Male
d)
Affected Female
49.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
50.
This pedigree represents the inheritance of hemophilia in this family. How many of the females have the hemophilia trait?
a)
8
b)
5
c)
2
d)
3
51.
What does an open circle represent?
a)
Not Affected Male
b)
Not Affected Female
c)
Affected Male
d)
Affected Female
52.
In the second generation-how many people are carriers of the trait?
a)
2
b)
3
c)
5
d)
6
53.

The smallest biological unit of a living organism is a

a)

cell

b)

compound

c)

element

d)

molecule

54.

Fully grown parent cells split into two halves resulting in two daughter cells with the exact DNA as the parent.

a)

Binary Fission

b)

Budding

c)

Fragmentation

d)

Vegetative Reproductions

55.

A parent cell breaks into pieces and each piece becomes a new offspring.

a)

Binary Fission

b)

Budding

c)

Fragmentation

d)

Vegetative Reproductions

56.

What type of asexual reproduction is taking place?

a)

Binary Fission

b)

Budding

c)

Fragmentation

d)

Regeneration

e)

Vegetative Reproduction

57.

What type of asexual reproduction is taking place?

a)

Binary Fission

b)

Budding

c)

Fragmentation

d)

Regeneration

e)

Vegetative Reproduction

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