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Unit 7 Exam 1 (Study Session)

Total questions: 50

Worksheet time: 51mins

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.

If a person has 2 different alleles for a gene, their alleles are ​considered ​ (a)   , but if they have 2 of the same alleles, their alleles are ​ (b)   .

Choose from the below words
heterozygous
homozygous
different
similar
4.

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

a)

dominant

b)

recessive

c)

homozygous

d)

heterozygous

5.
______ is the set of genes possessed by someone
a)
DNA
b)
Chromosome
c)
Genotype
d)
Phenotype
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.
Expressed only if NO dominant version is present
a)
homozygous
b)
heterozgyous
c)
allele
d)
recessive
8.
Question Image

Match the following vocabulary words with their definitions

a)

Genetics

1.

The Scientific study of heredity

b)

Heredity

2.

The process in which characteristics are passed down from parents to offspring.

c)

Trait

3.

An organism's characteristics.

d)

Genotype

4.

The specific genetic make up or "code" for an individual.

e)

Phenotype

5.

The total physical appearance for an individual.

9.

Match the following terms with the correct image...

a)
1.

Alleles

b)
2.

Chromosomes

c)
3.

Genes

10.

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

11.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
12.
Scientific study of how traits are passed to offspring through genes
a)
Heredity
b)
Genetics
c)
Inheritance
d)
Allele
13.
one set of instructions for an inherited trait
a)
heredity
b)
allele
c)
trait
d)
gene
14.
Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.
a)
DNA
b)
protein
c)
RNA
d)
glucose nucleic acid (GNA)
15.
Traits can be inherited or influenced by ______ factors, like the sun. 
a)
environmental
b)
mutation
c)
variation
d)
genetic
16.
Humans have ____ chromosomes.
a)
57
b)
22
c)
46
d)
100
17.

the passing of information from one generation to the next

a)

phenotype

b)

heredity

c)

genotype

d)

genes

18.

structures that contain hereditary information and transfer it to the next generation

a)

genotype

b)

phenotype

c)

alleles

d)

chromosomes

19.

basic units of heredity carried by chromosomes

a)

genes

b)

chromosome

c)

alleles

d)

phenotype

20.

variations of genes that determines traits in organisms

a)

chromosomes

b)

alleles

c)

genotypes

d)

phenotypes

21.

alleles exhibit their effect if they are present on one chromosome

a)

dominant

b)

recessive

c)

phenotype

d)

genotype

22.

alleles exhibit their effect only when they are both chromosomes

a)

genotype

b)

phenotype

c)

recessive

d)

dominant

23.

an organisms particular combination of paired alleles

a)

homozygous

b)

heterozygous

c)

genotype

d)

phenotype

24.

the traits produced by those alleles that are physically seen

a)

homozygous

b)

heterozygous

c)

genotype

d)

phenotype

25.

a gene composed of two identical alleles

a)

heterozygous

b)

homozygous

c)

dominant

d)

recessive

26.

a gene composed of two different alleles

a)

homozygous

b)

heterozygous

c)

dominant

d)

recessive

27.
Which of the following genotypes would be considered heterozygous?
a)
BB
b)
gg
c)
Ff
d)
TT
28.
Which of the following alleles is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
29.
Who is the father of genetics? 
a)
Charles Darwin 
b)
Gregor Mendel
c)
Dimitri Mendeleev 
d)
Hans Krebs 
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.
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
32.

Objective #5

(B-brown eyes & b-blue eyes)

Cross (Dad)Bb X (Mom)BB.

List the possible genotypes from this cross.

a)

BB, Bb, bb

b)

BB

c)

BB, Bb

d)

bb,Bb

33.

Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed? (B=brown eyes and b=blue eyes)

a)

0 %

b)

25%

c)

50%

d)

75%

34.

A red flower (Rr) is crossed with a white flower (rr). What is the genotypic ratio?

a)

0 RR; 0 Rr: 4 rr

b)

2 RR; 0 Rr: 2 rr

c)

4 RR; 0 Rr: 0 rr

d)

0 RR; 2 Rr: 2 rr

35.

In sheep, the allele for belly fur (A) is dominant to the allele for no belly fur (a): Two sheep with no belly fur mate and produce offspring. What is the percent chance that the offspring will have belly fur?

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

36.

In sheep, the allele for belly fur (A) is dominant to the allele for no belly fur (a): A mother that is homozygous dominant for belly fur mates with a heterozygous father. What percent of the offspring will be homozygous dominant for belly fur?

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

37.
Tall is dominant to short. A homozygous tall plant is crossed with a short plant. What will be the phenotypes of the offspring?
a)
100% tall
b)
50% tall, 50% short
c)
75% tall, 25% short
d)
25% tall, 75% short
38.

A white mouse with red eyes is crossed with a black mouse with brown eyes. The white mouse is recessive for both of its traits. The black mouse is dominant for both of its traits.

This cross would be

a)

BBEE x bbee

b)

BBEe x BbEe

c)

BbEE x BbEe

d)

BBee x BBEE

39.
What goes in box 3
a)
Aabb
b)
AABB
c)
AAbb
d)
aaBb
40.

What goes in box 15

a)

aabb

b)

AABB

c)

aaBB

d)

AAbb

41.
Using the dihybrid cross and key provided, what is the probability of the offspring being tall and white?
a)
9
b)
2
c)
3
d)
6
42.
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.
43.

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

44.

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

45.
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
46.
This type of inheritance pattern shows BOTH traits in possible offspring:
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
Indomitable 
47.

When one allele is not dominant over another, resulting in a blended phenotype for heterozygous offspring is considered....

a)

Incomplete Dominance

b)

Codominance

48.

Match the following combinations of alleles:

a)

Homozygous dominant

1.

DD

b)

Homozygous recessive

2.

dd

c)

Heterozygous

3.

Dd

49.

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

a)

yyRr

b)

YYRR

c)

yyrr

d)

YrYr

50.
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

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