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WorksheetsGenetics
Total questions: 52
Worksheet time: 1hrs 11mins
Name
Class
Date
1.
What kind of cells are made in MEIOSIS?
a)
Gametes
b)
Body cells
c)
Skin Cells
d)
Liver Cells
2.
A human body cell usually has how many chromosomes?
a)
6
b)
22
c)
4
d)
46
3.
The cells produced via meiosis are called:
a)
sex cells
b)
somatic cells
c)
body cells
d)
skin cells
4.
Why do 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
5.
If a body cell in a butterfly contains 24 chromosomes, a butterfly egg would contain
a)
3
b)
6
c)
12
d)
24
6.
The purpose of meiosis is to form ________ cells.
a)
body
b)
sex
c)
somatic
d)
brain
7.
How many daughter cells are produced at the end of meiosis?
a)
1
b)
2
c)
3
d)
4
8.
Which of the following is NOT a gamete (sex cell)?
a)
egg
b)
sperm
c)
skin cell
d)
all of the above are gametes
9.
What process, and which type of resulting cells are represented?
a)
mitosis, gametes
b)
mitosis, body cells
c)
meiosis, gametes
d)
meiosis, body cells
10.
Which of the following will only show if two alleles are present?
a)
a dominant trait
b)
heterozygous
c)
a recessive trait
d)
hybrid
11.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
12.
How many alleles (letters) does a child get from each parent for each trait?
a)
1
b)
2
c)
3
d)
4
13.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
14.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
15.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both
16.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
17.
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
18.
B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
a)
they have same phenotype and genotype
b)
they have different genotypes and phenotypes
c)
they have same phenotype but different genotypes
d)
they have same genotype but different phenotypes
19.
AA and Aa always show up as
a)
dominant
b)
recessive
20.
aa always shows up as
a)
dominant
b)
recessive
21.
Aa is
a)
homozygous
b)
heterozygous
22.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
23.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
24.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
25.
Which of the following is homozygous dominant?
a)
Yy
b)
Y
c)
yy
d)
YY
26.
Which of the following is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
27.
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
28.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond
29.
W=white hair
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?
a)
none
b)
3/4
c)
1/2
d)
all
30.
Each one of the boxes on the Punnett Square represents what probability of an offsprings' genotype?
a)
25%
b)
1%
c)
10%
d)
0%
31.
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
32.
How many females are in this pedigree?
a)
3
b)
4
c)
6
d)
7
33.
How many of the males in this pedigree show the trait being studied?
a)
2
b)
3
c)
4
d)
6
34.
Is the following genotype homozygous or heterozygous?
TT
TT
a)
homozygous
b)
heterozygous
35.
Is the following genotype homozygous or heterozygous?
Gg
Gg
a)
homozygous
b)
heterozygous
36.
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
37.
A red flowered plant (RR) is crossed 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%
38.
What type of inheritance do two alleles have if their traits blend together?
a)
Incomplete Dominance
b)
Co-Dominance
39.
A tall plant (TT) is crossed with a short plant (SS) and a medium plant (TS) results. This is what type of inheritance pattern?
a)
Incomplete Dominance
b)
Codominance
40.
A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?
a)
Incomplete Dominance
b)
Co dominance
41.
If you cross a black chicken with a white chicken, only checkered chickens would be produced. What kind of inheritance pattern does this follow?
a)
incomplete Dominance
b)
Co-Dominance
42.
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
43.
If a Homozygous red snapdragon and a Heterozygous pink snapdragon were crossed-what percentage of the offspring would be homozygous white?
a)
0%
b)
25%
c)
50%
d)
75%
44.
If a Homozygous red snapdragon and a Heterozygous pink snapdragon were crossed-what percentage of the offspring would be homozygous red?
a)
0%
b)
25%
c)
50%
d)
75%
45.
This type of inheritance pattern shows BOTH traits in possible offspring
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
dominant pattern
46.
This is an example of ___________.
a)
Incomplete Dominance
b)
Codominance
47.
This is an example of ___________?
a)
Incomplete dominance
b)
Co-Dominance
48.
This is an example of ___________.
a)
Incomplete Dominance
b)
Codominance
49.
Crossing individuals with similar characteristics so that those desired characteristics will appear in the offspring is called
a)
hybridization
b)
genetic engineering
c)
selective breeding
d)
asexual reproduction
50.
If a man has blood type O and his wife has blood type AB, what blood types are possible among their children? Use a Punnett Square to
a)
A only
b)
B only
c)
A and B
d)
O only
51.
The process of transfering DNA from one organism into a different organism to alter its DNA is considered
a)
genetic engineering
b)
sexual reproduction
c)
a mutation
d)
pleiotropy
52.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
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