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WorksheetsCMS Unit 5: Genetics Pre-Assessment
Total questions: 29
Worksheet time: 16mins
Name
Class
Date
1.
What mutation has occurred here?
T-G-A-C-C-A
T-G-A-G-C-A
T-G-A-C-C-A
T-G-A-G-C-A
a)
Substitution
b)
Deletion
c)
Insertion
d)
Frameshift
2.
Are all mutations bad?
a)
Yes
b)
No
3.
Mutations:
a)
are permanent changes in the DNA sequence or structure
b)
produce allelic variation
c)
are more likely to be harmful than beneficial
d)
all of the above
4.
Any change in the sequence of DNA is...
a)
transgenic shift
b)
Single Genotype
c)
Monohybrid Trait
d)
Mutation
5.
DNA molecule segment is : TTACGCAAG
The mutated DNA segment is TTCGCAAG. This is an example of ___ mutation.
The mutated DNA segment is TTCGCAAG. This is an example of ___ mutation.
a)
Substitution
b)
Deletion
c)
Insertion
d)
Inversion
6.
DNA molecule segment is : TTACGCAAG
The mutated DNA segment is TTACGCAAC. This is an example of ___ mutation.
The mutated DNA segment is TTACGCAAC. This is an example of ___ mutation.
a)
Substitution
b)
Insertion
c)
Inversion
d)
Translocation
7.
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
8.
Squidward has light blue skin, and his genotype for this trait is Bb. Would Squidward be considered a purebred or hybrid for light blue skin?
a)
Purebred
b)
Hybrid
9.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
10.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
11.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
12.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
13.
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
14.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
15.
Two heterozygous (Tt) tall pea plants are crossed. Which describes their offspring?
a)
50% tall and 50% short
b)
75%tall and 25% short
c)
100%short
16.
Which of the following alleles is homozygous (purebred) recessive?
a)
Tt
b)
tt
c)
TT
d)
t
17.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous genes
d)
mutated DNA
18.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
19.
Which of the following is homozygous dominant?
a)
Yy
b)
Y
c)
yy
d)
YY
20.
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
21.
In a Punnett square each box represents a(n)....
a)
offspring
b)
parent
c)
gene
d)
trait
22.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond
23.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
24.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
25.
In the second generation-how many people have the disease or display the physical trait?
a)
2
b)
4
c)
5
d)
6
26.
How many individuals are there in the 3rd generation?
a)
2
b)
3
c)
4
d)
6
27.
How many people in this whole pedigree have the trait/disease?
a)
2
b)
3
c)
4
d)
6
28.
Which individual in this pedigree MUST be a carrier?
a)
1
b)
3
c)
4
d)
14
29.
Which of the following complementary base pairs are correct?
a)
A - T
b)
A - G
c)
T - C
d)
G - U
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