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Unit 7 Exam 1 (QuickCheck)

Total questions: 35

Worksheet time: 52mins

Name
Class
Date
1.

Different variations of genes are...

a)

Genomes

b)

Alleles

c)

Chromosomes

d)

Genes

2.
The traits of an organism are passed to its offspring on small coded strands of DNA material called
a)
meiosis
b)
recessive traits
c)
genes
d)
heredity
3.

This type of allele is expressed whether there are one or two copies present.

a)

dominant

b)

recessive

c)

homozygous

d)

heterozygous

4.
______ is the set of genes possessed by someone
a)
DNA
b)
Chromosome
c)
Genotype
d)
Phenotype
5.
Expressed only if NO dominant version is present
a)
homozygous
b)
heterozgyous
c)
allele
d)
recessive
6.
What tool can we use to predict what traits offspring will have?
a)
Punnett Square
b)
Wardlaw Rectangle
c)
Mendel Circle
d)
Preston Square
7.

A capital P represents a dominant allele for purple flower. A lowercase p represents the recessive allele for white flower. Which is the only way to get a white flower color?

a)

Pp

b)

PP

c)

pP

d)

pp

8.
Traits can be inherited or influenced by ______ factors, like the sun. 
a)
environmental
b)
mutation
c)
variation
d)
genetic
9.

a gene composed of two identical alleles

a)

heterozygous

b)

homozygous

c)

dominant

d)

recessive

10.

a gene composed of two different alleles

a)

homozygous

b)

heterozygous

c)

dominant

d)

recessive

11.
Which of the following genotypes would be considered heterozygous?
a)
BB
b)
gg
c)
Ff
d)
TT
12.
Which of the following alleles is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
13.
Who is the father of genetics? 
a)
Charles Darwin 
b)
Gregor Mendel
c)
Dimitri Mendeleev 
d)
Hans Krebs 
14.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
15.
B=brown eyes
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
16.
What goes in box 3
a)
Aabb
b)
AABB
c)
AAbb
d)
aaBb
17.

What goes in box 15

a)

aabb

b)

AABB

c)

aaBB

d)

AAbb

18.
In a dihybrid cross
a)
one trait is crossed.
b)
two traits are crossed.
c)
four boxes are needed for the punnett square.
d)
mom's alleles are dominant.
19.

Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?

a)

9/16

b)

3/16

c)

1/16

d)

16/16

20.

In a certain breed of cattle, both red and white hairs show up together. This is an example of which type of inheritance pattern?

a)

incomplete dominance

b)

codominance

c)

multiple alleles

d)

polygenic inheritance

21.
This type of inheritance pattern is a MIXTURE of both traits, like the old theory of blending
a)
incomplete dominance
b)
co-dominance
c)
complete dominance
d)
recessive pattern
22.

Match the following combinations of alleles:

a)

Homozygous dominant

1.

DD

b)

Homozygous recessive

2.

dd

c)

Heterozygous

3.

Dd

23.

What is the genotype that should be in the blank square?

a)

yyRr

b)

YYRR

c)

yyrr

d)

YrYr

24.
What is the genotype for a pea plant heterozygous for round seeds (R), and homozygous recessive for green seeds (y)?
a)
Ry
b)
RRyy
c)
RrYy
d)
Rryy
25.
Which of the following alleles is homozygous (purebred) recessive?
a)
Tt
b)
tt
c)
TT
d)
t
26.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
27.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
28.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both 
29.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
30.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
31.
What is the probability of heterozygous offspring?
a)
25%
b)
50%
c)
0%
d)
100%
32.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
33.
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 
34.

Look at the punnett square shown. What is the probability that the offspring will show the dominant trait?

a)

100%

b)

75%

c)

50%

d)

25%

e)

0%

35.

Look at the punnett square. What is the probability of the offspring showing the recessive trait?

a)

100%

b)

75%

c)

50%

d)

25%

e)

0%

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