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WorksheetsGenetics and Meiosis
Total questions: 90
Worksheet time: 5hrs 30mins
Name
Class
Date
1.
The genetic makeup of an organism or what represents the letters in a Dihybrid Cross
a)
allele
b)
genotype
c)
phenotype
d)
karyotype
2.
What describes the physical appearance of a trait?
a)
allele
b)
genotype
c)
phenotype
d)
karyotype
3.
If alleles look like Aa in a genotype it is said to be
a)
homozygous
b)
heterozygous
c)
incomplete dominant
d)
codominant
4.
If alleles look like AA in a genotype it is said to be
a)
homozygous
b)
heterozygous
c)
incomplete dominant
d)
codominant
5.
Trait will always show up in an organism if the allele is present
a)
recessive
b)
dominant
c)
incomplete dominant
d)
codominant
6.
This all is covered up when a dominant allele is present
a)
recessive
b)
dominant
c)
incomplete dominance
d)
co-dominant
7.
What shows the possible combinations of alleles that can result from a genetic cross?
a)
bar graph
b)
pie chart
c)
punnett square
d)
co-dominant graph
8.
If two heterozygous tall plants are crossed, and tall is dominant. What would be your expected phenotypes?
a)
100% tall
b)
75% tall, 25%short
c)
50% tall, 50%short
d)
25% tall, 75% short
9.
Unattached earlobes (E) is dominant. Attached earlobes (e) is recessive. A woman with the genotype (Ee) and a man with the genotype (ee) have a child. What is the probability that the child is heterozygous?
a)
0%
b)
25%
c)
50%
d)
75%
10.
If the allele for gray fur (G) is dominant to the allele for white fur (g) in mice, What will be the ratio if you cross a heterozygous gray mouse with a white mouse?
a)
3GG : 0Gg : 1gg
b)
2GG : 1Gg : 1gg
c)
1GG : 2Gg : 1gg
d)
0GG : 2Gg : 2gg
11.
If a purebred, normal feathered bird (FF) is crossed with a frizzy-feathered bird (ff) how many different phenotypes would you have?
a)
1
b)
2
c)
3
d)
4
12.
Tomato plants usually have hairy stems. Hairless stems are present in tomato plants that are homozygous recessive for this trait. If the stem characteristics are determined by a single gene, what is the expected outcome of crossing two tomato plants that are heterozygous for hairy stems?
a)
100% hairless stems
b)
100% hairy stems
c)
50% hairy stems : 50% hairless stems
d)
75% hairy stems : 25% hairless stems
13.
In cocker spaniels the allele for a black coat color (B) is dominant over the allele for a brown coat color (b). If a brown cocker spaniel is crossed with a heterozygous black cocker spaniel, which of the following genotypic ratios can be expected?
a)
0BB : 2Bb : 2bb
b)
1BB : 2Bb : 1bb
c)
2BB : 0Bb : 2bb
d)
2BB : 1Bb : 0bb
14.
What is going to be the genotype that is missing?
a)
AABb
b)
AABB
c)
AAbb
d)
aaBB
15.
Cell created at the end of meiosis are best known as
a)
somatic cells
b)
gamete cells
c)
skin cells
d)
diploid cells
16.
If human body cells have 46 chromosomes, how many chromosomes will be in gamete cells after meiosis?
a)
92
b)
46
c)
23
d)
12
17.
What is being depicted in this picture?
a)
sexual reproduction
b)
anaphase I of meiosis
c)
crossing-over
d)
replication
18.
What is one advantage of sexual reproduction?
a)
offspring are identical to parents
b)
offspring are resistant to viruses
c)
offspring are born live, rather than from eggs
d)
offspring inherit a wider variety of genetic information
19.
How many times in meiosis does the cell divided?
a)
2
b)
4
c)
3
d)
1
20.
The inherited combination of alleles is known as the offspring's
a)
heredity
b)
phenotype
c)
genotype
d)
redigree
21.
Sex cells are produced through the process of
a)
mitosis
b)
cytokinesis
c)
binary fission
d)
meiosis
22.
The color purple (P) is dominant to the color white (p). According to the Punnett Square, what is the probability of an offspring being white?
a)
0%
b)
25%
c)
50%
d)
75%
23.
The color purple (P) is dominant to the color white (p). According to the Punnett Square, what is the probability of an offspring being PURPLE?
a)
0%
b)
25%
c)
50%
d)
75%
24.
The color purple (P) is dominant to the color white (p). According to the Punnett Square, what is the ratio of phenotypes?
a)
3 Purple: 1 White
b)
2 Purple: 2 White
c)
1 Purple: 3 White
d)
4 Purple
25.
Which of the following are the genotype?
a)
Tt, Ww
b)
Red, White
c)
Red, Rr
26.
In a genotype, what does the lower case letter represent?
a)
Recessive
b)
Dominant
27.
How many haploid daughter cells are produced after meiotic division?
a)
1
b)
2
c)
3
d)
4
28.
What causes genetic variation in meiosis?
a)
chromosomes lining up
b)
crossing over of chromosomes
c)
separation of chromosomes
d)
chromosomes pulling apart
29.
What kind of cells are made in MEIOSIS?
a)
Haploid cells
b)
Diploid Cells
c)
Skin Cells
d)
Liver Cells
30.
Diploid Cells are represented by
a)
2n
b)
n
c)
4n
d)
1/2 n
31.
If the Diploid number of Carrots is 18, the haploid number is
a)
18
b)
9
c)
27
d)
36
32.
The process of crossing over occurs in what phase of meiosis?
a)
anaphase 1
b)
prophase 1
c)
prophase 2
d)
telophase 1
33.
The chromosomes that pair up during meiosis, are called __________ chromosomes.
a)
homozygous
b)
asexual
c)
homologous
d)
genes
34.
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)
35.
Crossing over creates
a)
male genotype
b)
genetic variation (differences)
c)
DNA replication
d)
mitosis
36.
Which cellular process is shown?
a)
meiosis
b)
endocytosis
c)
mitosis
d)
phagocytosis
37.
products of meiosis are genetically
a)
different
b)
identical
38.
Which of the following cells is a gamete?
a)
egg
b)
bone
c)
heart
d)
muscle
39.
The fertilized egg is termed a/an _____.
a)
gamete
b)
allele
c)
homolog
d)
zygote
40.
In mitosis cells are genetically _______, but in meiosis cells are genetically ______.
a)
diverse, identical
b)
identical, diverse/different
41.
In sexual reproduction, chromosome reduction is necessary to ___.
a)
ensure that all offspring have the correct diploid number of chromosomes
b)
ensure that all offspring have the correct haploid number of chromosomes
c)
ensure that all daughter cells are identical
42.
1n indicates that the cell is ____.
a)
Diploid
b)
Haploid
43.
Mitosis makes sure that all daughter cells are _____.
a)
genetically identical, diploid
b)
genetically identical, haploid
c)
genetically diverse, diploid
d)
genetically diverse, haploid
44.
Asexual reproduction and mitosis occur in...
a)
Body Cells
b)
Sex Cells or Gametes
45.
How many daughter cells are produced at the end of mitosis?
a)
1
b)
2
c)
3
d)
4
46.
The purpose of sexual reproduction and meiosis is to form ________ cells.
a)
body
b)
sex
c)
somatic
d)
brain
47.
Before mitosis or meiosis can begin, DNA must go through Interphase. This is when...
a)
DNA replicates
b)
DNA splits
c)
DNA forms chromosomes
d)
Chromosomes cross over
48.
What causes genetic variation in meiosis?
a)
chromosomes lining up
b)
crossing over of chromosomes
c)
separation of chromosomes
d)
chromosomes pulling apart
49.
What is one reason why we need meiosis?
a)
To double the number of chromosomes going into sex cells
b)
To halve the number of chromosomes going into sex cells
c)
To triple the number of chromosomes going into sex cells
d)
To not change the number of chromosomes going into sex cells
50.
Which of the following produces identical nuclei in cells?
a)
pollination
b)
mitosis
c)
osmosis
d)
fertilization
51.
Which of the following cell types is formed by meiosis?
a)
muscle cells
b)
skin cells
c)
sperm cells
d)
blood cells
52.
Which process is necessary for the inherited traits of an organism to be passed along by sexual reproduction?
a)
mitosis
b)
meiosis
c)
mutation
d)
fission
53.
Which cellular process is shown?
a)
meiosis
b)
endocytosis
c)
mitosis
d)
phagocytosis
54.
Which of the following best explains why the chromosome number is an even number in organisms?
a)
It is only by coincidence, many organisms have an odd number
b)
The diploid number is always even so that when mitosis occurs each cell gets the same number of chromosmes
c)
The diploid chromosome number represents pairs of chromosomes, one from each parent, so that it is always an even number
d)
Chromosomes double very time the cell divides, so after the first division, the number is always even
55.
A male shark has 40 chromosomes in each of its sex cells. How many would be present in its body cells?
a)
20
b)
40
c)
80
d)
160
56.
How would the DNA in a horse muscle cell compare with the DNA in a horse sperm cell?
a)
The sperm cell would have twice the DNA as the muscle cell.
b)
The sperm cell would have half as much DNA as the muscle cell.
c)
The sperm cell and muscle cell would contain the same amount of DNA.
d)
The muscle cell would have four times the DNA as the sperm cell..
57.
When an area of a chromatid is exchanged with the matching area on a chromatid of its homologous chromosome, _________________ occurs
a)
crossing over
b)
mutagenesis
c)
hybridization
d)
fertilization
58.
If a somatic (body) cell in a butterfly contains 24 chromosomes, a butterfly egg would contain
a)
3
b)
6
c)
12
d)
24
59.
Which of the following is NOT a gamete (sex cell)?
a)
egg
b)
sperm
c)
skin cell
d)
all of the above are gametes
60.
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
61.
A heterozygous yellow pea plant's genotype would be:
a)
YY
b)
yy
c)
Yy
d)
Yg
62.
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
63.
If T=Tall & t=short, what is the genotypic ratio?
a)
1:3
b)
3:1
c)
1:2:1
d)
2:2
64.
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
65.
A dog gives birth to 5 puppies. What percentage of the chromosomes does each puppy share with the mother?
a)
25%
b)
50%
c)
75%
d)
100%
66.
Which is true about asexual reproduction?
a)
Takes only one mate to reproduce and takes a longer time to reproduce
b)
Takes a shorter amount of time to reproduce and it takes two mates to reproduce
c)
Reproduces diverse offspring and takes a longer time to reproduce
d)
Takes only one mate to reproduce and takes a shorter time to reproduce
67.
What percentage of chromosomes are contributed by a sperm cell?
a)
75%
b)
25%
c)
50%
d)
100%
68.
Sexual reproduction requires _____ parents and asexual reproduction requires ___ parents
a)
1,1
b)
2,2
c)
2,1
d)
1,2
69.
What is an advantage of sexual reproduction?
a)
Allows genetic variation
b)
Only needs one parent
c)
Happens very quickly
d)
Offspring are exact copies of parent
70.
Which is a type of Asexual Reproduction
a)
Flowers being pollinated
b)
Binary fission
c)
Chickens laying fertilized eggs
d)
Conjugation
71.
What part of our cells holds our DNA?
a)
cytoplasm
b)
cell membrane
c)
nucleus
d)
ribosomes
72.
Before a cell can divide, what must happen?
a)
Nothing, it is always ready to divide
b)
The number of chromosomes must be reduced by half
c)
The chromosomes must replicate
d)
The number of chromosomes must triple.
73.
In which type of cells will mitosis occur?
a)
egg cells
b)
germ cells
c)
jail cells
d)
Somatic cells
74.
Bacteria reproduce asexually by a process called
a)
replication
b)
meiosis
c)
splitting in two
d)
binary fission
75.
After meiosis is complete, the new cells:
a)
are all identical
b)
are all different
c)
are half identical and half different
d)
are all stretched out
76.
The process on the left is:
The process on the right is:
The process on the right is:
a)
Left: meiosis
Right: meiosis
Right: meiosis
b)
Left: meiosis
Right: cloning
Right: cloning
c)
Left: mitosis
Right: meiosis
Right: meiosis
d)
Left: mitosis
Right: mitosis
Right: mitosis
77.
In mitosis, the two resulting cells are
a)
different from the starting cell and identical to each other.
b)
different from the starting cell and different from each other.
c)
identical to the starting cell and different from each other.
d)
identical to the starting cell and identical to each other.
78.
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.
79.
In which type of cells will mitosis occur?
a)
egg cells
b)
sperm cells
c)
jail cells
d)
Body cells except the sperm and egg cells
80.
The female sex cell is called
a)
zygote
b)
sperm
c)
fertilization
d)
egg
81.
The male sex cell is called
a)
egg
b)
zygote
c)
sperm
d)
mitosis
82.
Most of the cells in the human body are produced by
a)
mitosis
b)
meiosis
83.
Name that process
a)
Mitosis
b)
Meiosis
c)
Mutation
d)
Cell Cycle
84.
During which phase of the meiotic cell cycle does DNA Replication occur?
a)
Interphase
b)
Prophase
c)
Metaphase
d)
Telophase
85.
In Meiosis if the parent cells has 40 chromosomes, then how many will the daughter cells have
a)
40
b)
10
c)
20
d)
18
86.
When a cell divides, what do we call the 2 new cells?
a)
mother cells
b)
father cells
c)
daughter cells
d)
son cells
87.
Chromosomes that have corresponding traits from the opposite sex parent are called:
a)
Heterogeneous chromosomes
b)
homologous chromosomes
c)
Mother and Father chromosomes
d)
Grandmother and grandfather chromosomes
88.
Another name for a sex cell is a:
a)
gamete
b)
embryo
c)
bone cell
d)
muscle cell
89.
A is:
B is:
C is:
B is:
C is:
a)
A: chromatid
B: centromere
C: chromosome
B: centromere
C: chromosome
b)
A: chromosome
B: chromatid
C: centromere
B: chromatid
C: centromere
c)
A: chromosome
B: centromere
C: chromatid
B: centromere
C: chromatid
d)
A: centromere
B: chromosome
C: chromatid
B: chromosome
C: chromatid
90.
Dante wants to match the types of cells with how they are produced. Which choice correctly matches a type of cell with how it is produced?
a)
Egg cell --> meiosis in males
b)
Sperm cell --> mitosis in males
c)
Body cell --> mitosis in females
d)
Body cell --> meiosis in females
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