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WorksheetsGenetics
Total questions: 112
Worksheet time: 2hrs 50mins
Name
Class
Date
1.
the chances of something happening
a)
dominant
b)
genotype
c)
phenotype
d)
probability
2.
A single piece of coiled DNA found in the cells; contains genes that encode traits.
a)
gene
b)
chromosome
c)
trait
d)
DNA
3.
A characteristic that an organism can pass on to its offspring through its genes
a)
protein
b)
trait
c)
DNA
d)
gene
4.
Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.
a)
DNA
b)
protein
c)
RNA
d)
glucose nucleic acid (GNA)
5.
If a gene is found only on the X chromosome and not the Y chromosome, it is said to be what?
a)
sex-linked trait
b)
polygenic trait
c)
codominant trait
d)
incomplete dominance trait
6.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
7.
What does heterozygous mean?
a)
An organism that has the same genes for a trait (TT or tt)
b)
An organism that has different genes for a trait (Tt)
c)
When neither gene is fully dominant; offspring is a mixture of both
d)
the different forms of a trait (hair color--> brown, blonde, red
8.
This is an example of what?
a)
Complete dominance
b)
Incomplete dominance
c)
Codominance
d)
None of the above
9.
If T=Tall & t=short, what is the genotypic ratio?
a)
1:3
b)
3:1
c)
1:2:1
d)
2:2
10.
Snapdragon flowers come in red, pink and white. What type of inheritance is this?
a)
Complete Dominance
b)
Incomplete Dominance
c)
Codominance
d)
Polygenic Inheritance
11.
A heterozygous yellow pea plant's genotype would be:
a)
YY
b)
yy
c)
Yy
d)
Yg
12.
Which process and type of resulting cells are represented?
a)
mitosis, gametes
b)
mitosis, body cells
c)
meiosis, gametes
d)
meiosis, body cells
13.
Which of the following cell types is formed by meiosis?
a)
muscle cells
b)
skin cells
c)
sperm cells
d)
blood cells
14.
How many times in meiosis does the cell divide?
a)
2
b)
4
c)
3
d)
1
15.
The sex of an offspring is determined by ______________________.
a)
the mother
b)
the father
c)
the mother and the father
d)
by the environment
16.
Incomplete dominance means that the traits are
a)
expressed equally
b)
dominant
c)
recessive
d)
blended
17.
Term for homozygous organisms that display two dominant phenotypes at the same time
a)
codominance
b)
incomplete dominance
c)
multiple alleles
d)
linked genes
18.
The inherited combination of alleles is known as the offspring's
a)
heredity
b)
phenotype
c)
genotype
d)
redigree
19.
Sex cells are produced through the process of
a)
mitosis
b)
cytokinesis
c)
binary fission
d)
meiosis
20.
A human usually has _____ total chromosomes.
a)
6
b)
22
c)
4
d)
46
21.
In fruit flies eye color is carried on the X chromosome. RED is dominant to WHITE. What is the sex and color of the following: XrY
a)
female red
b)
female white
c)
male red
d)
male white
22.
In fruit flies eye color is carried on the X chromosome. RED is dominant to WHITE. What is the sex and color of the following: XRXR
a)
female red
b)
female white
c)
male red
d)
male white
23.
What determines gender in humans?
a)
the X and Y chromosome
b)
chromosome 21
c)
codominance
d)
epistasis
24.
In humans, skin tone is caused by 3 genes, each with 2 alleles. This is an example of
a)
codominance
b)
incomplete dominance
c)
polygenic inheritance
d)
multiple alleles
25.
Examine the pedigree. The allele for the presence of a widow’s peak is dominant. Therefore, we can tell from the chart that in the couple labeled 2:
a)
the male is heterozygous and the female is homozygous.
b)
the male is homozygous and the female is heterozygous.
c)
the male is homozygous and the female is homozygous.
d)
the male is heterozygous and the female is heterozygous.
26.
One form of a gene is called_______________
a)
a DNA
b)
a Phenotype
c)
a trait
d)
an allele
27.
the condensed form of DNA is called________________
a)
an allele
b)
a gene
c)
a chromosome
d)
a phenotype
28.
Which of the following will only show if two alleles are present?
a)
a dominant trait
b)
a recessive trait
29.
Which of the following genotypes would be considered heterozygous?
a)
BB
b)
gg
c)
Ff
d)
TT
30.
What is the percentage of offspring that have green pods?
a)
100%
b)
75%
c)
50%
d)
25%
31.
What percentage of the offspring in the punnett square are shown as a hybrid?
a)
100%
b)
75%
c)
50%
d)
25%
32.
What is the phenotype of the heterozygous parent in the punnett square?
a)
green
b)
yellow
c)
hybrid
d)
purebred
33.
In this punnett square, which is the dominant trait?
The B stands for bud.
The B stands for bud.
a)
purple flower bud
b)
white flower bud
c)
dominant
d)
recessive
34.
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.
35.
Who would use a pedigree?
a)
Doctor
b)
Scientist
c)
Grandma
d)
All of the above
36.
In the ocean, the blobfish can be red, pink, or white. This is an incomplete dominant trait, where the red is RR, the white is rr, and the pink is Rr. A red blobfish is crossed with a white blobfish. What do their offspring look like?
a)
all are pink
b)
Half are red, half are white
c)
75% red, 25% white
d)
all are white
37.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
38.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
39.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
40.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
41.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
42.
Magda is a tall, 11 year old drummer. She has a scar on her right cheek. She is good at swimming. Which of her traits did Magda most likely inherit?
a)
height
b)
the scar
c)
ability to swim
d)
ability to play drums
43.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
44.
G = green, g = yellow
The genotype for a yellow plant is...
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
all of the choices result in yellow
45.
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
46.
Two heterozygous (Tt) tall pea plants are crossed. Which describes their offspring?
a)
50% tall and 50% short
b)
75%tall and 25% short
c)
100%short
47.
Is this trait (the shaded individuals) dominant or recessive?
a)
dominant
b)
recessive
48.
A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?
a)
100% BB
b)
75% BB and 25%Bb
c)
50 % BB and 50% Bb
d)
50% Bb and 50% bb
49.
Which answer best describes codominant alleles?
a)
Both are equally dominant
b)
Both are equally recessive
c)
Neither are dominant or recessive
50.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
51.
Which of the following is heterozygous
a)
FF
b)
tt
c)
Gg
d)
RR
52.
Which of the following is homozygous recessive?
a)
rr
b)
AA
c)
TT
d)
Ff
53.
Which of the following is homozygous dominant?
a)
Jj
b)
Rr
c)
MM
d)
ee
54.
Mark is heterozygous. If B is for brown hair, and b is for blonde hair, what is Mark's phenotype?
a)
Brown Hair
b)
Blonde Hair
c)
Brown and Blonde Hair
d)
Black Hair
55.
Mark is heterozygous. If B is for brown hair, and b is for blonde hair, what is Mark's genotype?
a)
BB
b)
bb
c)
Bb
d)
bB
56.
Chris is homozygous dominant. If W for widow's peak, and w is for no widow's peak, what is Chris' phenotype?
a)
Widow's Peak
b)
No Widow's Peak
c)
A small Widow's Peak
d)
Not enough information
57.
Chris is homozygous dominant. If W for widow's peak, and w is for no widow's peak, what is Chris' genotype?
a)
WW
b)
ww
c)
Ww
d)
wW
58.
Hh
a)
Homozygous Dominant
b)
Homozygous Recessive
c)
Heterozygous
d)
Heterozygous Dominant
59.
TT
a)
Homozygous Dominant
b)
Homozygous Recessive
c)
Heterozygous
d)
Heterozygous Dominant
60.
rr
a)
Homozygous Dominant
b)
Homozygous Recessive
c)
Heterozygous
d)
Heterozygous Recessive
61.
Which of the following is heterozygous
a)
Dd
b)
dD
c)
DD
d)
dd
62.
An organism's _______ describes its genetic composition. An organism's _______ describes its appearance or observable characteristics.
a)
phenotype; genotype
b)
species; heredity
c)
heredity; species
d)
genotype; phenotype
63.
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
64.
Chart that shows the relationships within a family
a)
Pedigree
b)
Karyotype
c)
T chart
d)
Key
65.
Photograph of chromosomes grouped in ordered pairs
a)
pedigree
b)
Punnett Square
c)
Venn Diagram
d)
Karyotype
66.
What do we use pedigrees for?
a)
To look at families
b)
To make determinations about the offspring
c)
To track traits in families
d)
Nothing
67.
an organism produced by parents
a)
parent
b)
offspring
c)
traits
d)
probability
68.
Colorblindness is a recessive x-linked disorder.
Which genotype represents a male with normal vision?
Which genotype represents a male with normal vision?
a)
XNXN
b)
XnXn
c)
XNY
d)
XnY
69.
Colorblindness is a recessive x-linked disorder.
Which genotype represents a female who is colorblind?
Which genotype represents a female who is colorblind?
a)
XNXn
b)
XnXn
c)
XNXN
d)
XnY
70.
Duchenne muscular dystrophy is a recessive x-linked disorder.
According to the Punnett square, what percentage of offspring will have the disorder?
According to the Punnett square, what percentage of offspring will have the disorder?
a)
0%
b)
25%
c)
50%
d)
100%
71.
The passing of traits from parent to offspring
a)
Heredity
b)
Genetics
c)
Hybrid
d)
Probability
72.
Who was the father of genetics
a)
Sagan
b)
Issac Newton
c)
Gregor Mendel
d)
C.jenkins
73.
The study of heredity and the variation of inherited characteristics
a)
gene
b)
genetics
c)
meiosis
d)
hybrid
74.
which is heterozygous ?
a)
Tt
b)
TT
75.
Which is homozygous ?
a)
Zz
b)
SS
76.
What do half colored symbols represent?
a)
The individual is a carrier (heterozygous).
b)
The individual expresses the trait.
c)
The individual has both recessive alleles.
d)
The individual has both dominant alleles.
77.
Having blue eyes is an example of
a)
genotype
b)
phenotype
78.
Having the genes for blue eyes is an example of
a)
genotype
b)
phenotype
79.
Having genes that make you more likely to be good at sprinting is an aspect of
a)
genotype
b)
phenotype
80.
Usain Bolt trains daily to improve his muscular explosiveness. Muscle size is an example of
a)
genotype
b)
phenotype
81.
The genotype of: bb will have the PHENOTYPE of...
a)
black fur
b)
white fur
c)
course hair
d)
fine hair
82.
The genotype of: AA will have the PHENOTYPE of...
a)
albinism
b)
normal pigment
c)
albino carrier
83.
The genotype of: Bbll will have the PHENOTYPE of...
a)
black fur/short tail
b)
black fur/long tail
c)
white fur/short tail
d)
white fur/long tail
84.
Consider the alleles: aahh, which of these IS NOT possible way to describe this gerbil?
a)
pure albino / pure fine hair
b)
albino with fine hair
c)
heterozygous albino / heterozygous fine hair
d)
All are accurate descriptions
85.
Dominant alleles are represented with a
a)
symbol
b)
shape
c)
capital letter
d)
lower cased letter
86.
Recessive alleles are represented with a
a)
symbol
b)
shape
c)
capital letter
d)
lower cased letter
87.
female
a)
FF
b)
YX
c)
XX
d)
GG
88.
Male
a)
FM
b)
GB
c)
MM
d)
XY
89.
Female eggs always contain ___ (sex) chromosomes
a)
X
b)
Y
c)
M
d)
F
90.
Male sperms carry ___ (sex) Chromosomes
a)
X and X
b)
X and Y
c)
X or Y
d)
B or G
91.
With sexual reproduction, the offsprings are ______.
a)
identical to the parent(s)
b)
not identical to the parent(s)
92.
Which is true of MEIOSIS?
a)
used in asexual reproduction
b)
results in two daughter cells
c)
New cells have the same number of chromosomes as parent
d)
results in 4 daughter cells
93.
Which is true of MITOSIS?
a)
two identical daughter cells
b)
four daughter cells
c)
cell division occurs twice
d)
used in sexual reproduction
94.
In the second generation-how many people are carriers of the trait?
a)
2
b)
3
c)
5
d)
6
95.
You have two alleles on each gene. Where do you alleles come from?
a)
From the grandparent you most resemble
b)
Your parents
c)
Your siblings
d)
You make them by yourself
96.
The Nucleus is
a)
an organelle that protects the DNA
b)
an organelle that makes ATP (Energy)
c)
The outer edge of the cell
d)
the "X" shape structure that is made of DNA
97.
Human Sex Cells (Eggs and Sperm) have ____ number of chromosomes.
a)
46
b)
92
c)
23
d)
4
98.
How many people in this whole pedigree have the trait/disease?
a)
2
b)
3
c)
4
d)
6
99.
Two Alleles make a
a)
Gene
b)
Chromosome
c)
DNA
d)
Phenotype
100.
In a pedigree, offsprings are represented by....
a)
Horizontal Line
b)
Vertical Line
101.
How many females are in this pedigree?
a)
3
b)
4
c)
6
d)
7
102.
What does a filled in square represent?
a)
Not affected Female
b)
Not affected Male
c)
Affected Male
d)
Affected Female
103.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
104.
What type of heredity is shown in the pedigree?
a)
Autosomal
b)
Sex-Linked
105.
What does an open circle represent?
a)
Not Affected Male
b)
Not Affected Female
c)
Affected Male
d)
Affected Female
106.
What is this?
a)
karyotype
b)
pedigree
c)
Venn diagram
d)
Punnett Square
107.
What is this?
a)
Pedigree
b)
Karyotype
c)
Venn diagram
d)
Punnett Square
108.
A chart that shows all the possible combinations of alleles.
a)
Probability
b)
Punnett Square
c)
Phenotype
d)
Genotype
109.
When both alleles are neither dominant nor recessive. (Red + White= Red & White Patterns)
a)
Homozygous
b)
Heterozygous
c)
Codominant Alleles
d)
Incomplete Dominance
110.
When alleles blend together to make a new characteristic. (Red + White= Pink)
a)
Homozygous
b)
Heterozygous
c)
Codominant Alleles
d)
Incomplete Dominance
111.
Small changes in a cell’s genetic material.
a)
Meiosis
b)
Mutation
c)
Pedigree
d)
Genome
112.
A branched diagram that shows how a trait is passed through a family of organisms.
a)
Mutation
b)
Pedigree
c)
Genome
d)
Genotype
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