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WorksheetsBio genetics and heredity
Total questions: 55
Worksheet time: 1hrs 16mins
Name
Class
Date
1.
In mice, the homozygous mice are black and white. The heterozygous mice are gray. What pattern of inheritance is expressed in fur color in mice?
a)
complete dominance and recessiveness
b)
co-dominance
c)
incomplete dominance
d)
pleiotropy
2.
Chromosomes that do NOT play a role in determining the sex of an individual are called
a)
sex chromosoems
b)
X and Y
c)
autosomes
d)
A and B are correct
3.
A child has type O blood, if mother has type A blood, what would the fathers blood type be
a)
A,B, or O
b)
AB or A
c)
AB or B
d)
O only
4.
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
5.
If the parents of a cross are AaBcCc x aaBBcc. What is the probability of an offspring that is homozygous recessive for all 3 traits?
a)
1/64
b)
1/32
c)
1/8
d)
O
6.
If a female was a carrier for sex-linked color blindness, what percentage of her male children would also be color blind?
a)
0%
b)
25%
c)
50%
d)
100%
7.
In a sex-linked inheritance pedigree you would expect to see
a)
more affected females
b)
all carrier males
c)
more affected males
d)
an equal number of affected males and females
8.
Which of the following statements best describes what a Barr body is and its significance?
a)
it is an inactivated Y chromosome and results in a man being sterile
b)
It is an inactivated Y chromosome, and the person who has it appears female
c)
It is an inactivated X chromosome and results in females with half their cells have one X inactivated and in the other half of their cells have the other X inactivated
d)
it is an inactivated X chromosome and results in females who are sterile
9.
Which disease or disorder is caused by the inheritance of two mutated alleles?
a)
Down Syndrome
b)
Colorblindness
c)
Cystic Fibrosis
d)
Hemophilia
10.
What is the gender of the individual whose karyotype is seen in the image?
a)
Male
b)
Female
11.
Which significance level
(column) do you look at when finding the critical value?
(column) do you look at when finding the critical value?
a)
.50
b)
.10
c)
.05
d)
.01
12.
How do you find degrees of freedom?
a)
one less than the possible genotypes
b)
one less than the possible phenotypes
c)
total number divided 2
d)
total number times 2
13.
How do you find critical value?
a)
where degrees of freedom lines up with significance level
b)
where significance level lines up with chi-square
c)
the difference between total and chi-square
d)
degrees of freedom minus significance level
14.
How do you find the expected number?
a)
ratio from punnett square multiplied to total
b)
ratio from punnett square divided by total
c)
ratio from punnett square multiplied by observed number
d)
ratio from punnett square minus observed number
15.
Observed in the wild are 10 circles, 20 squares and 30 triangles. The ratio for this particular population is 2:3:5
observed: 10 circles expected:
observed 20 squares expected : 18
observed 30 triangles expected: 30
What is the expected number for circles?
observed: 10 circles expected:
observed 20 squares expected : 18
observed 30 triangles expected: 30
What is the expected number for circles?
a)
6
b)
12
c)
18
d)
24
16.
Observed in the wild are 10 circles, 20 squares and 30 triangles. The ratio for this particular population is 2:3:5
observed: 10 circles expected: 12
observed 20 squares expected : 18
observed 30 triangles expected: 30
What is the degrees of freedom?
observed: 10 circles expected: 12
observed 20 squares expected : 18
observed 30 triangles expected: 30
What is the degrees of freedom?
a)
1
b)
2
c)
3
d)
4
17.
Observed in the wild are 10 circles, 20 squares and 30 triangles. The ratio for this particular population is 2:3:5
observed: 10 circles expected: 12
observed 20 squares expected : 18
observed 30 triangles expected: 30
What is the critical value?
observed: 10 circles expected: 12
observed 20 squares expected : 18
observed 30 triangles expected: 30
What is the critical value?
a)
3.841
b)
5.991
c)
7.815
d)
9.488
18.
Observed in the wild are 10 circles, 20 squares and 30 triangles. The ratio for this particular population is 2:3:5
observed: 10 circles expected: 12
observed 20 squares expected : 18
observed 30 triangles expected: 30
What is the X2 of this problem?
observed: 10 circles expected: 12
observed 20 squares expected : 18
observed 30 triangles expected: 30
What is the X2 of this problem?
a)
.22
b)
.33
c)
.44
d)
.55
19.
Observed in the wild are 10 circles, 20 squares and 30 triangles. The ratio for this particular population is 2:3:5
observed: 10 circles expected: 12
observed 20 squares expected : 18
observed 30 triangles expected: 30
Would you accept or reject?
observed: 10 circles expected: 12
observed 20 squares expected : 18
observed 30 triangles expected: 30
Would you accept or reject?
a)
accept
b)
reject
20.
Colorblindness is a sex-linked recessive disorder. A normal woman whose father was colorblind marries a man with normal color vision. What percentage of their sons will be colorblind?
a)
0%
b)
25%
c)
50%
d)
100%
21.
Hemophilia is a sex-linked recessive disorder. A woman with hemophilia marries an unaffected man whose father had hemophilia. What percentage of their daughters will have hemophilia?
a)
0%
b)
25%
c)
50%
d)
100%
22.
Colorblindness is a sex-linked recessive disorder. If the daughter of a couple is colorblind, what are the two possible genotypes of her mother?
a)
XAXA and XAXa
b)
XAXA and XaXa
c)
XAXa and XaXa
d)
Cannot be determined
23.
If a trait shows up more commonly in men than women it is probably
a)
not inherited
b)
on the x chromosome and dominant
c)
on the x chromosome and recessive
d)
on a normal body chromosome
24.
What percentage of the female offspring will be a carrier for this recessive disease?
a)
0%
b)
50%
c)
100%
d)
25%
25.
Which of the following is NOT a sex-linked trait?
a)
Color-blindness
b)
Muscular Dystrophy
c)
Huntington disease
d)
Hemophilia
26.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a female who is a carrier for hemophilia?
Which genotype represents a female who is a carrier for hemophilia?
a)
XHXh
b)
XhXh
c)
XHXH
d)
XhY
27.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a male with hemophilia?
Which genotype represents a male with hemophilia?
a)
XHXh
b)
XhXh
c)
XHY
d)
XhY
28.
Colorblindness is a recessive x-linked disorder.
Which genotype represents a male with normal vision?
Which genotype represents a male with normal vision?
a)
XNXN
b)
XnXn
c)
XNY
d)
XnY
29.
Which of the following genotypes belongs in the red box in the Punnett square?
a)
XBXb
b)
XbXb
c)
XbY
d)
XBY
30.
Vitamin D resistant rickets (deformed bone formation) is a sex-linked DOMINANT trait. According to the Punnett square, what percentage of female offspring will have the disorder?
a)
0%
b)
25%
c)
50%
d)
100%
31.
This is an example of ___________?
a)
Incomplete dominance
b)
Co-Dominance
32.
This is an example of ___________.
a)
Incomplete Dominance
b)
Codominance
33.
What type of inheritance do two alleles have if their traits blend together?
a)
Incomplete Dominance
b)
Co-Dominance
34.
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
35.
This is an example of ___________.
a)
Incomplete Dominance
b)
Codominance
36.
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
37.
This type of inheritance pattern is a MIXTURE of both traits.
a)
incomplete dominance
b)
co-dominance
c)
complete dominance
38.
How are Incomplete Dominance and Co Dominance different than a normal Mendelian cross?
a)
There is no difference
b)
The heterozygous genotype has a unique phenotype
c)
There is no heterozygous genotype
d)
There is only one phenotype regardless of genotype.
39.
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
40.
Which type of inheritance causes both traits to be expressed equally in the heterozygote?
a)
Complete Dominance
b)
Incomplete Dominance
c)
Co-Dominance
d)
Sex-linked
41.
Genetic recombination is the production of offspring - - -
a)
with new combinations of genes
b)
with similar genes as their parent
c)
that are completely different from the parents
d)
that are super cute and irresistible
42.
Offspring LIKE parent = _________
Offspring DIFFERENT from parent = _________
Offspring DIFFERENT from parent = _________
a)
Parental : Recombinant
b)
Recombinant : Parental
c)
Linked : Unlinked
d)
Unlinked : Linked
43.
If results of recombination do NOT follow Mendel's Law of Independent Assortment, genes are likely to be - - -
a)
shuffled during meiosis
b)
linked
c)
inherited
d)
on separate chromosomes
44.
Linked genes tend to be inherited together, like freckles and red hair, because they - - -
a)
compliment each other well
b)
are on chromosomes close together
c)
are on the same chromosome
d)
tend to be adaptations best suited for the environments of the organism
45.
Which genes are most likely linked?
a)
genes 1 & 2
b)
genes 2 & 3
c)
genes 3 & 4
d)
genes 1 & 4
46.
The reason some linked genes may get separated during gamete formation is - - -
a)
genes aren't on the same chromosome
b)
genes don't compliment each other well
c)
a crossing over event shuffles the genes
d)
an environmental impact forces the genes to shuffle
47.
A linkage map shows - - -
a)
all the chromosomes lined up from largest to smallest
b)
a percentage of crossing over events
c)
a diagram of the dna
d)
none of these answers are correct
48.
On a linkage map, 1 map unit is equivalent to 1% recombination frequency. If the map unit equivalent is 50+, this means that - - -
a)
the genes are linked
b)
the genes are not linked
c)
the genes are not on the same chromosome
d)
the genes are too close to measure
49.
A ______ is a heritable factor that consists of a length of DNA and influences a specific characteristic.
a)
genome
b)
chromosome
c)
gene
d)
strand
50.
The ____ is the whole of the genetic information of an organism.
a)
genome
b)
chromosome
c)
gene
d)
DNA
51.
New alleles are formed by
a)
recombination
b)
mutation
c)
sexual reproduction
d)
meiosis
52.
The image shows cells in ___
a)
metaphase 1
b)
anaphase 1
c)
metaphase 2
d)
anaphase 2
53.
Meiosis is important for (check all that apply):
a)
creating new alleles
b)
generating recombination of alleles
c)
allowing for sexual reproduction
d)
generating two identical daughter-cells
54.
The possible genotypes of a person with blood type B is:
a)
B B
b)
IA IB
c)
IB i
d)
IB IB
55.
The following conditions are determined by a recessive allele:
a)
cystic fibrosis
b)
Huntington's disease
c)
hemophilia
d)
color blindness
e)
blood type A
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