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WorksheetsMeiosis & Genetics Test Review
Total questions: 75
Worksheet time: 2hrs 4mins
Name
Class
Date
1.
Which of the following alleles is homozygous (purebred) recessive?
a)
Tt
b)
tt
c)
TT
d)
t
2.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous genes
d)
mutated DNA
3.
Aa is
a)
homozygous (purebred)
b)
heterozygous (hybrid)
4.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both
5.
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
6.
T = tall an t = short
What is the phenotype for Tt?
What is the phenotype for Tt?
a)
short
b)
tall
c)
medium sized
d)
neither tall or short
7.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
8.
How many alleles (letters) does a child get from each parent for each trait?
a)
1
b)
2
c)
3
d)
4
9.
T - tall and t = short
In the punnett square below, what belongs in the missing square
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
10.
Which of the following is homozygous dominant?
a)
Yy
b)
Y
c)
yy
d)
YY
11.
In a Punnett square each box represents a(n)....
a)
offspring
b)
parent
c)
gene
d)
trait
12.
Is this punnett square correct or incorrect?
a)
Incorrect
b)
Correct
13.
How many chromosomes are in a sex cell?
a)
46
b)
23
c)
26
d)
43
14.
When a capital letter is used, what kind of allele is being represented?
a)
Recessive Allele
b)
Codominance
c)
Punnett Squares
d)
Dominant Allele
15.
When two identical alleles for a trait are in an organism, the organism is said to be ____________?
a)
Heterozygous
b)
Homozygous
c)
allele
d)
resseive
16.
outward appearance of an organism, regardless of its genes.
a)
phenotype
b)
genotype
c)
haploid
d)
deploid
17.
The genetic characteristics of recessive genes
a)
tend to mask the characteristics of dominant genes.
b)
are always expressed in the phenotype.
c)
are usually codominant.
d)
tend to be masked by the characteristics of dominant genes.
18.
If this image were real, it would represent what type of inheritance?
a)
incomplete dominance
b)
codominance
c)
polygenic inheritance
d)
compete dominance
19.
AB blood type is an example of what type of inheritance?
a)
complete dominance
b)
incomplete dominance
c)
codominance
d)
polygenic inheritance
20.
A red flowered plant (RR) breeds 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%
21.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
22.
Snap dragon color is a incomplete dominant trait. A red flower (RR) is crossed with white flower (WW)? What color are flowers that are RW?
a)
Red
b)
Red and White
c)
White
d)
Pink
23.
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
24.
This is an example of ___________?
a)
Incomplete dominance
b)
Codominance
25.
How are Incomplete Dominance and Co Dominance different than a normal Mendelian cross?
a)
There is no difference
b)
The heterozygous genotype has a third phenotype
c)
There is no heterozygous genotype
d)
There is only one phenotype regardless of genotype.
26.
What do you call the non-Mendelian inheritance pattern that states that neither trait is dominant and the traits appear to blend together?
a)
Codominance
b)
Incomplete dominance
c)
Polygenic traits
27.
The genetic information inside of which cells will be passed on to offspring?
a)
Nerve cells only
b)
Egg & sperm cells
c)
Blood cells only
d)
None of these
28.
A dihybrid cross shows the possible outcomes of _______
a)
two alleles
b)
two parents
c)
two traits/characters
d)
a self pollination
29.
A red flower (Rr) is crossed with a white flower (rr). What is the genotypic ratio?
a)
0 RR; 0 Rr: 4 rr
b)
2 RR; 0 Rr: 2 rr
c)
4 RR; 0 Rr: 0 rr
d)
0 RR; 2 Rr: 2 rr
30.
T4 - Black fur in mice (B) is dominant to brown fur (b). Short tails (T) are dominant to long tails (t). What percentage of the offspring of the cross BbTt x BBtt will have black fur and long tails?
a)
0%
b)
25%
c)
50%
d)
100%
31.
A male beetle has the genotype Ttbb. If this beetle mates with a female with genotype TTBb, what is the chance their offspring will have the genotype TtBb?
a)
12.5%
b)
25%
c)
50%
d)
75%
32.
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
33.
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
34.
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
35.
What goes in box 1
a)
AABb
b)
AABB
c)
aabb
d)
AaBb
36.
What goes in box 3
a)
Aabb
b)
AABB
c)
AAbb
d)
aaBb
37.
Cross Two Homozygous plants
(RRYY x rryy)
R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds?
(RRYY x rryy)
R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds?
a)
0%
b)
25%
c)
50%
d)
100%
38.
Long tongues (T) are dominant to short tongues in green tree frogs. What is the probability that two frogs that are heterozygous for long tongues could produce offspring with short tongues?
a)
100%
b)
75%
c)
50%
d)
25%
39.
How can two parents with brown eyes have a child with blue eyes?
a)
The parents may both have recessive genes for blue eyes.
b)
The child was born during the winter
c)
Eye color in humans is not an inherited trait
d)
The child was deprived of oxygen during its birth
40.
Donkey and the fire-breathing dragon have lots of babies. If breathing fire is a recessive trait (f), what must be Donkey’s genotype if they have a baby that breathes fire?
a)
FF
b)
ff
c)
Ff
d)
F
41.
What is the correct phenotype ratio when crossing two parents that are heterozygous for both traits in a dihybrid cross?
a)
100% heterozygous
b)
1:2:1
c)
3:1
d)
9:3:3:1
42.
What causes genetic variation in meiosis?
a)
chromosomes lining up
b)
crossing over of chromosomes
c)
separation of chromosomes
d)
chromosomes pulling apart
43.
What kind of cells are made in MEIOSIS?
a)
Haploid cells
b)
Diploid Cells
c)
Skin Cells
d)
Liver Cells
44.
If the Diploid number of Carrots is 18, the haploid number is
a)
18
b)
9
c)
27
d)
36
45.
What process that occurs during Prophase I of Meiosis is pictured?
a)
Nondisjunction
b)
Crossing over
c)
Trascription
d)
DNA Replication
46.
Crossing over during Meiosis causes...
a)
genetic variation
b)
identical cells
c)
cell death
d)
DNA replication to occur
47.
When homologous chromosomes match up, they form a structure call a ___________.
a)
tetrad (pair of chromosomes, one from mom and one from dad)
b)
triad
c)
diploid
d)
quad (group of 4 replicated chromosomes, 2 from mom and 2 from dad)
48.
Crossing over creates
a)
male genotype
b)
genetic variation (differences)
c)
DNA replication
d)
mitosis
49.
Which cellular process is shown?
a)
meiosis
b)
endocytosis
c)
mitosis
d)
phagocytosis
50.
Which of the following best describes meiosis?
a)
It is carried out in all tissues theat require cell replacement
b)
It occurs only in cells in the reproductive structures of an organism
c)
It happens in all of the tissues except the brain and spinal cord
d)
It is the first stage of mitosis
51.
What phase is represented?
a)
metaphase 1
b)
metaphase 2
c)
anaphase 1
d)
anaphase 2
52.
What phase is shown in the picture?
a)
metaphase 2
b)
anaphase 2
c)
metaphase 1
d)
telophase 1
53.
products of meiosis are genetically
a)
different
b)
identical
54.
A human zygote should have _____ chromosomes inside.
a)
46
b)
23
c)
92
d)
64
55.
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
56.
How many daughter cells does Meiosis create?
a)
2
b)
4
c)
8
d)
1
57.
Color Blindness is a sex linked disease. Therefore, it HAS to affect which pair of chromosomes?
a)
21
b)
23
c)
24
d)
1-22
58.
Determine the sex of the individual whose karyotype is displayed in the image.
a)
female
b)
male
59.
Determine the sex of the individual whose karyotype is displayed in the image.
a)
female
b)
male
60.
Which structure is labeled as A in the diagram?
a)
Centromere
b)
Chromosome
c)
Sister chromatids
61.
Which structure is labeled as B in the diagram?
a)
Centromere
b)
Chromosome
c)
Sister chromatids
62.
Which structure is labeled as C in the diagram?
a)
Centromere
b)
Chromosome
c)
Sister chromatids
63.
A pair of identical chromosomes shown in a karyotype, one inherited from mom, and one inherited from dad are called
a)
sister chromotids
b)
centromeres
c)
homologous chromosomes
d)
autosomes
64.
A sperm contains
a)
Both an X and a Y chromosome
b)
Two X chromosomes
c)
An X OR a Y chromosome
d)
only a Y chromosome
65.
An egg contains
a)
22 autosomes and an X chromosome
b)
22 autosomes and an Y chromosome
c)
44 autosomes and 2 X chromosomes
d)
44 autosomes and an X and a Y chromosome
66.
Chromosome pairs 1-22 are referred to as
a)
sex chromosomes
b)
sister chromatids
c)
a karyotype
d)
autosomes
67.
A picture of paired chromosomes is a
a)
sister chromatid
b)
centromere
c)
syndrome
d)
karyotype
68.
parent 1: GgBB
parent 2: ggBb
Find the gametes for parent 1.
parent 2: ggBb
Find the gametes for parent 1.
a)
GB, GB, gB, gB
b)
gB, gb, gB, gb
c)
Gg, BB, GB, GB
d)
gg, Bb, gB, gb
69.
If you have a parent who has GgBb as their genotype, what are the possible alleles they could donate to their gametes?
a)
GB, Gb, gB, gb
b)
GB, GB, gb, gb
c)
Gb, Gb, Gb, GB
d)
GG, BB, gg, bb
70.
How can a person's muscle cells have the same exact DNA sequences as their nerve cells even though the look and perform completely different?
a)
The two different cells become mutated
b)
The proteins expressed in each cell are different
c)
They actually have different DNA in the two types of cells.
d)
The genome of the different cells changes
71.
Punnett Square: Type AB father and type O mother. What are the percentages of each offspring?
a)
Type A: 50%, Type B 0%, Type AB 50%, Type 0 0%
b)
Type A: 50%, Type B 50%, Type AB 0%, Type 0 0%
c)
Type A: 25%, Type B 25%, Type AB 25%, Type 0 25%
d)
Type A: 0%, Type B 0%, Type AB 50%, Type 0 50%
72.
In the blood type Punnett square shown, what is the probability the offspring will inherit each blood type?
a)
50% A, 25% B, 0% AB, 25% O
b)
25% A, 50% B, 25% AB, 0% O
c)
50% A and 50% B
d)
25% AB, 50% A, 25% O
73.
If a father is AA and a mother is AB, what is the probability for a child with AB blood?
a)
0%
b)
25%
c)
50%
d)
75%
74.
If two parents have type AB blood, what is the probability that their child will have type O blood?
a)
0%
b)
25%
c)
50%
d)
100%
75.
Based off this punnett square, what fraction of the offspring will have wrinkled, green seeds?
a)
9/16
b)
3/16
c)
1/16
d)
16/16
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