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WorksheetsGenetics, Part 1
Total questions: 41
Worksheet time: 38mins
Name
Class
Date
1.
What is a punnett square?
a)
graph used to predict the possible genotypes of offspring in a given cross
b)
a graph used to predict the possible birth rate of offspring.
c)
a graph used to predict the possible behavioral characteristics an offspring could have
d)
None of the above
2.
What is probabilty?
a)
is the mathematical chance of a specific outcome in relation to the total number of possible outcomes.
b)
is the mathematical formula to additional and subtraction of genotypes
c)
is the mathematical chance of a specific relationship between genotype and phenotype
d)
All of the above
3.
Each one of the boxes on the Punnett Square represents what probability of an offsprings' genotype?
a)
25%
b)
1%
c)
10%
d)
0%
4.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
5.
AA and Aa always show up as
a)
dominant
b)
recessive
6.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
7.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
8.
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
9.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
10.
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
11.
aa always shows up as
a)
dominant
b)
recessive
12.
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
13.
A green pea plant (GG) is being crossed with a green pea plant (Gg). What is the phenotype?
a)
100 % rainbow
b)
50% yellow and 50% green
c)
100% green
d)
100% yellow
14.
If brown eyes are dominant over blue eyes, what would be the parent genotypes if two heterozygous brown eyed persons were crossed?
a)
BB and bb
b)
BB and Bb
c)
Bb and Bb
d)
bb and Bb
15.
Purple is dominant to white. A heterozygous purple flower is crossed with a white flower. What are the genotypes and phenotypes of the offspring?
a)
100% Pp (purple)
b)
50% Pp (purple); 50% pp (white)
c)
75% Pp (purple); 25% pp (white)
d)
25% PP, 50% Pp, 25% pp
75% purple, 25% white
75% purple, 25% white
16.
What is the purpose of pedigrees?
a)
To track traits in a family
b)
To make determinations about offspring
c)
To observe a family tree
d)
Pedigrees are not particularly usefule
17.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
18.
What does an open/unshaded circle represent?
a)
not affected male
b)
affected male
c)
not affected female
d)
affected female
19.
What does a filled square represent?
a)
not affected male
b)
affected male
c)
not affected female
d)
affected female
20.
This pedigree represents the inheritance of hemophilia in this family. How many of the females have the hemophilia trait?
a)
8
b)
5
c)
2
d)
3
21.
What do half colored symbols represent?
a)
The individual is a carrier (heterozygous).
b)
The individual expresses the trait.
c)
The individual has both recessive alleles.
d)
The individual has both dominant alleles.
22.
What does a horizontal line between a square and a circle mean?
a)
They are siblings
b)
They are cousins
c)
They are married ("together")
d)
They are the children
23.
What does a vertical line coming down from a square and circle that are connected by horizontal line indicate?
a)
They are cousins
b)
The children
c)
Aunts and Uncles
24.
What is the genotype of the mother?
a)
BB
b)
bb
c)
Bb
d)
BB or Bb
25.
What is the genotype of the father?
a)
AA
b)
aa
c)
Aa
d)
AA or aa
26.
How are individuals I-2 and III-5 related?
a)
Grandpa and grandson
b)
Mom and son
c)
Uncle and nephew
d)
Grandma and grandson
27.
How many children did individuals I-1 and I-2 have?
a)
2
b)
4
c)
6
d)
8
28.
What is the relationship between person I 1 and III 2?
a)
Father and Son
b)
Father and Daughter
c)
Grandfather and Granddaughter
d)
Uncle and Niece
29.
A picture of paired chromosomes is a
a)
sister chromatid
b)
centromere
c)
syndrome
d)
karyotype
30.
Which structure is labeled as A in the diagram?
a)
Centromere
b)
Chromosome
c)
Sister chromatids
31.
Chromosome pairs 1-22 are referred to as
a)
sex chromosomes
b)
sister chromatids
c)
a karyotype
d)
auotsomes
32.
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
33.
What makes this individual's karyotype not normal?
a)
An extra sex chromosome
b)
An extra autosome
c)
A missing sex chromosome
d)
A missing autosome
34.
Nondisjunction can result in
a)
trisomy conditions
b)
monosomy conditions
c)
additional sex chromosomes
d)
all of these
35.
Determine the sex of the individual whose karyotype is displayed in the image.
a)
female
b)
male
36.
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
37.
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
38.
This karyotype is taken from a ________.
a)
female with Turner's syndrome
b)
male with Down's syndrome
c)
female with Down's syndrome
d)
normal female
39.
This karyotype is taken from a ___________.
a)
normal female
b)
normal male
c)
male with Klinefelter's syndrome
d)
female with Turner's syndrome
40.
Turner's Syndrome has a karyotype notation of
a)
47XX+21
b)
47XXY
c)
45XO
d)
44XX
41.
Klinefelter's Syndrome has the karyotype notation of
a)
47XX+21
b)
47XXY
c)
45XO
d)
44XX
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