WorksheetsGenetics revision
Total questions: 51
Worksheet time: 1hrs 6mins
Name
Class
Date
1.
What word is used to describe different versions of the same gene?
a)
Chromosomes
b)
Phenotype
c)
Alleles
d)
Genotype
2.
What word is used to describe a pair of chromosomes?
a)
Heterotrophic
b)
Heterozygous
c)
Homozygous
d)
Homologous
3.
What word describes the inheritance of two alleles that are the same?
a)
Homozygous
b)
Heterozygous
c)
Homologous
d)
Heterotrophic
4.
What word describes the inheritance of two different alleles?
a)
Homozygous
b)
Heterozygous
c)
Heterotrophic
d)
Homologous
5.
What word is used to describe the characteristics that an individual inherits?
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
6.
The genes an organism has for a specific trait.
a)
Genotype
b)
Phenotype
c)
Punnett Square
d)
Dominant Allele
7.
How an organism actually looks based on a specific trait.
a)
Genotype
b)
Phenotype
c)
Punnett Square
d)
Dominant Allele
8.
A chart that shows all the possible combinations for alleles that can result from a genetic cross.
a)
Punnett Square
b)
Genotype
c)
Phenotype
d)
Trait
9.
Having two identical alleles for a trait.
a)
Homozygous
b)
Heterozygous
c)
Trait
d)
Allele
10.
Having two different alleles for a trait.
a)
Homozygous
b)
Heterozygous
c)
Trait
d)
Allele
11.
The different forms a gene can have.
a)
Allele
b)
Trait
c)
Genotype
d)
Phenotype
12.
An allele that is masked when a dominant allele is present.
a)
Dominant Allele
b)
Recessive Allele
c)
Homozygous
d)
Heterozygous
13.
The stage of the cell cycle during which the cell’s nucleus divides into two new nuclei and one copy of the DNA is distributed into each new daughter cell
a)
Mitosis
b)
Prophase
c)
Metaphase
d)
Anaphase
14.
First Phase in Mitosis. Nucleus dissolves and the chromosomes become visible
a)
Telophase
b)
Prophase
c)
Metaphase
d)
Anaphase
15.
Second Phase in Mitosis. Each Sister Chromatid attached to a Spindle Fiber
a)
Telophase
b)
Prophase
c)
Metaphase
d)
Anaphase
16.
Third Phase in Mitosis. Centromeres divide and the Sister Chromatids separate.
a)
Telophase
b)
Prophase
c)
Metaphase
d)
Anaphase
17.
Fourth Phase in Mitosis. Cell divides and the nucleus begins to form in each daughter cell.
a)
Telophase
b)
Prophase
c)
Metaphase
d)
Anaphase
18.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
19.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
20.
An allele that is hidden when the dominant allele is present.
a)
Dominant Allele
b)
Gene
c)
Recessive Allele
d)
Probability
21.
How many boxes would say BB?
a)
1
b)
2
c)
4
d)
0
22.
What is the genotypic ratio here
a)
TT = 25% Tt= 50% tt=25%
b)
all tall
c)
TT= 75% tt = 25%
d)
Tt = 100%
23.
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
24.
If B = brown hair and b = blonde hair, what is the probability of brown hair?
a)
25%
b)
50%
c)
0%
d)
75%
25.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
26.
Which pea pod color is dominant?
a)
green
b)
yellow
27.
True or False: The yellow pea pod color is recessive to green.
a)
True
b)
False
28.
Which of the following colors does "Aa" indicate that the individual's pea pod will be?
a)
Yellow, because it has a little "a"
b)
Green, because it has a big "A"
c)
Green, because it has a little "A"
d)
Yellow, because it has a big "A"
29.
What is the correct code that would fill the bottom right quadrant in place of the question mark?
a)
AA
b)
Aa
c)
aa
30.
How many of the offspring of the 2 parent pea plants have a green pod color?
a)
1 out of 4
b)
2 out of 4
c)
3 out of 4
d)
4 out of 4
31.
bb is a _________________ genotype
a)
Dominant
b)
Homozygous
c)
Genotype
d)
Phenotype
32.
Normal color vision (N) is dominant over color blindness (n). A man, who has red-green colorblindness (XnY), and his wife, who is a carrier for colorblindness (XNXn), have a colorblind son. What is the probability that their next son will also be colorblind?
a)
0%
b)
25%
c)
50%
d)
100%
33.
A woman heterozygous for A blood marries a man heterozygous for B blood. What is the probability that they will produce offspring with AB blood?
a)
0%
b)
25%
c)
50%
d)
75%
34.
Black hair color is dominant (B) to white hair color (b) in mice. Determine the phenotypic ratio for the offspring of a heterozygous black mouse and a white mouse.
a)
4 Black: 0 White
b)
3 Black: 1 White
c)
2 Black: 2 White
d)
0 Black: 4 White
35.
Genetic crosses involving a particular type of flower exhibit complete dominance with respect to petal color. Red (R) is dominant to white (r). Using the Punnett square, what is the expected percentage of offspring that will have white flowers from a cross of parent flowers with a genotype of Rr.
a)
0%
b)
25%
c)
50%
d)
100%
36.
Phenylketonuria (PKU) is inherited as a recessive condition. A man with PKU marries a woman without any alleles for PKU. What is the probability that their child will inherit PKU?
a)
0%
b)
25%
c)
50%
d)
75%
37.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
38.
Which individual in the first generation is a carrier?
a)
The male
b)
The female
c)
individual 1
d)
None of the above
39.
There are no carriers for Huntington's Disease- you either have it or you don't. Is Huntington's disease caused by a dominant or recessive trait?
a)
Dominant
b)
Recessive
40.
The genotype of the affected son and daughter at the bottom of this pedigree...
a)
could be homozygous dominant
b)
could be homozygous recessive
c)
could be heterozygous
d)
Can't tell
41.
Is this trait (the shaded individuals) dominant or recessive?
a)
dominant
b)
recessive
42.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
43.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
44.
What are the 4 nitrogen bases?
a)
adenine, thymine, cytoplasm, and guanine
b)
adenine, thymine cytosine, and guanine
c)
adenine, thymine, cytosine, and gylcerol
d)
adenine, thymine, cytosine, and glucose
45.
Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG
ATG TGA CAG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
46.
Replicate the following strand of DNA:
AATCATGGA
AATCATGGA
a)
AATCATGGA
b)
TTAGTACCT
c)
UUAGUACCU
d)
GGATAUCUA
47.
What is the correct complimentary strand for the following DNA?ATCGAG
a)
TACGAG
b)
ATCGAG
c)
TAGCTG
d)
TAGCTC
48.
DNA stands for
a)
Do Not Know Anything
b)
Ribonucleic Acid
c)
Deoxyribonucleic Acid
d)
None of the others
49.
Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG
ATG TGA CAG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
50.
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
51.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
100 %
