WorksheetsGenetics Test - Atlas All Stars
Total questions: 55
Worksheet time: 1hrs 29mins
Name
Class
Date
1.
the sequence of DNA that codes for a protein and thus determines a trait.
a)
Genes
b)
Traits
c)
Phenotypes
d)
Genotypes
2.
specific characteristic that varies from one individual to another. Example, brown hair, blue eyes, tall, curly hair.
a)
Heredity
b)
Genes
c)
Traits
d)
MItochondria
3.
This type of trait can only be expressed in the absence of a dominant trait.
a)
Codominant
b)
Do not click this one
c)
Dominant
d)
Recessive
4.
What is a phenotype?
a)
The expression of a trait; what you see.
b)
refers to the genetic makeup of an individual
c)
An organism that has the same genes for a trait (ex. TT or tt)
d)
the passing of traits from parent to offspring
5.
The inherited combination of alleles is known as the offspring's
a)
heredity
b)
phenotype
c)
genotype
d)
redigree
6.
An organism's appearance is known as its
a)
heredity
b)
phenotype
c)
genotype
d)
pedigree
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.
A heterozygous yellow pea plant's genotype would be:
a)
YY
b)
yy
c)
Yy
d)
Yg
9.
A corn plant heterozygous for tall sprouts mates with a corn plant with short sprouts. If tall sprouts are dominant, how many different phenotypes are possible in the offspring?
a)
1
b)
2
c)
3
d)
4
10.
If a heterozygous tall pea plant is crossed with a short pea plant, what are the possible genotypes of the future offspring?
a)
100% Tt
b)
50% Tt, 50% tt
c)
75%Tt, 25%tt
d)
25%TT, 50%Tt, 25%tt
11.
What type of "square" helps us solve genetic problems?
a)
carpenter square
b)
Mendel square
c)
Punnett square
d)
genetic square
12.
TT,tt,PP,pp,SS,ss are examples of alleles that are?
a)
homozygous
b)
heterozygous
c)
different
d)
homologous
13.
The exact genetic makeup of an organism, such as RR, Tt, PP is its?
a)
phenotype
b)
dominance
c)
genotype
d)
trait
14.
A physical characteristic that can be passed from parent to offspring.
a)
behavior
b)
trait
c)
strong muscles
d)
ability to fly a plane.
15.
Heterozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
16.
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
17.
Which of the following alleles is homozygous (purebred) recessive?
a)
Tt
b)
tt
c)
TT
d)
t
18.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
19.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
20.
In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?
a)
rr
b)
R
c)
RR
d)
RR or Rr
21.
This is an example of ___________?
a)
Incomplete dominance
b)
Co-Dominance
22.
This is an example of ___________.
a)
Incomplete Dominance
b)
Codominance
23.
This is an example of ___________.
a)
Incomplete Dominance
b)
Codominance
24.
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%
25.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
26.
Brown fur color is dominant over black fur color. Which of the following is the actual genotype of ALL of the offspring in the next generation of this cross for fur color?
AA x aa
AA x aa
a)
AA
b)
Aa
c)
aa
d)
brown fur
27.
3.If two white rabbit produce a black offspring, the parent’s genotypes for color must be:
a)
heterozygous
b)
homozygous black
c)
homozygous white
d)
not enough information was given
28.
In Mendel's pea plants, the homozygous recessive phenotype was white flowers. If Mendel crossed two homozygous recessive pea plants, what color flowers would be seen in the offspring?
a)
white and purple
b)
white
c)
purple
d)
lavendar
29.
What percentage of the offspring will be purebred dominant?
a)
0%
b)
25%
c)
50%
d)
75%
30.
D = dimples d = no dimples
What is the genotype for a homozygous recessive offspring?
What is the genotype for a homozygous recessive offspring?
a)
DD
b)
Dd
c)
dd
31.
Round (R) seeds are dominant to wrinkled (r) seeds.
What is the genotype for a homozygous dominant offspring?
What is the genotype for a homozygous dominant offspring?
a)
RR
b)
Rr
c)
rr
32.
If two purebred species (BB) are crossed, what percentage of their offspring would be BB?
a)
25%
b)
50%
c)
75%
d)
100%
33.
Short hair (S) is dominant to long hair (s).
What is the genotype for an offspring with long hair?
What is the genotype for an offspring with long hair?
a)
SS
b)
Ss
c)
ss
34.
What percentage of the offspring will be heterozygous dominant?
a)
100%
b)
75%
c)
50%
d)
25%
35.
The "Father of Genetics"
a)
Isaac Newton
b)
Gregor Mendel
c)
Albert Einstein
d)
Robert Hooke
36.
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
37.
What is the phenotype of the heterozygous parent in the punnett square?
a)
green
b)
yellow
c)
hybrid
d)
purebred
38.
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
39.
The traits of an organism are passed to its offspring on small coded strands of DNA material called
a)
meiosis
b)
recessive traits
c)
genes
d)
heredity
40.
Which sentence is FALSE?
a)
All organisms have 23 pairs of DNA.
b)
Chromosomes are made of genes.
c)
DNA is made out of 4 chemicals: adenine, cytosine, thymine, guanine
d)
DNA is the recipe for life.
41.
B = brown fur b = white fur
In the punnett square, what is the probability for white fur?
In the punnett square, what is the probability for white fur?
a)
0%
b)
25%
c)
50%
d)
75%
42.
Why may you look like your relatives?
a)
Because you have the same exact genes
b)
because you share similar genes
c)
because you're identical clones
d)
because you're all aliens
43.
What do genes have to do with traits?
a)
genes code for specific traits
b)
traits code for specific genes
c)
traits and genes are the same thing
d)
traits have nothing to do with genes
44.
Deoxyribonucleic Acid is better known as ________
a)
DNA
b)
Chromosome
c)
Alleles
d)
Phenotype
45.
What is the phenotype of the offspring? (A-Brown hair; a-blond hair)
a)
50 % Brown Hair and 50% Blond Hair
b)
25 % Brown Hair and 75% Blond Hair
c)
75 % Brown Hair and 25% Blond Hair
d)
0% Brown Hair and 100% Blond Hair
46.
A green pea plant (GG) is being crossed with a green pea plant (Gg). What is the phenotype?
a)
100 % rainbow
b)
50% yellow and 50% green
c)
100% green
d)
100% yellow
47.
A homozygous dominant brown mouse is crossed with a heterozygous brown mouse (tan is the recessive color).
a)
100 % tan
b)
100 % brown
c)
50 % brown and 50% tan
d)
75 % brown and 25 % tan
48.
How many alleles (letters) does a child get from each parent for each trait?
a)
1
b)
2
c)
3
d)
4
49.
What gender has an X and a Y chromosome?
a)
male
b)
female
50.
Which of the characteristics is a lion least likely to pass on to its offspring?
a)
fur color
b)
length of tail
c)
scars on leg
d)
body size
51.
What genotype would go in box 2?
a)
BB
b)
Bb
c)
bb
52.
Why are there no white rabbit babies?
a)
The white gene is not present in any of the babies.
b)
It takes two recessive genes to show the trait.
c)
Grey is a better color.
d)
Baby five will be white.
53.
Which of these Punnett squares represents a cross between a homozygous dominant parent and a heterozygous parent?
a)
b)
c)
d)
54.
The genotypic percentage resulting from this this cross would be _____________________.
a)
25% blue eye 75 % brown eye
b)
BB = 25% Bb = 50% bb = 25%
c)
BB= 50 % bb = 50%
d)
All brown eye
55.
Incomplete dominance occurs in cats, which allows them to be Black, White, or gray as shown on this Punnett square. What percentage of the offspring will be white?
a)
25
b)
50
c)
0
d)
100
100 %
