Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Review: Mendelian Genetics

Total questions: 48

Worksheet time: 1hrs 12mins

Name
Class
Date
1.
What is the percentage of homozygous recessive offspring?
a)
0%
b)
25%
c)
50%
d)
75%
2.
Green peas are dominant (G) to yellow peas (g). What is the genotype for a hetereozygous dominant offspring?
a)
Gg
b)
gg
c)
GG
3.
What percentage of the offspring will be purebred dominant?
a)
0%
b)
25%
c)
50%
d)
75%
4.
D = dimples        d = no dimples 
What is the genotype for a homozygous recessive offspring?
a)
DD
b)
Dd
c)
dd
5.
If two purebred species (BB) are crossed, what percentage of their offspring would be BB?
a)
25%
b)
50%
c)
75%
d)
100%
6.
What do you call the physical expression of a gene?
a)
genotype
b)
dominant
c)
phenotype
d)
allele
7.
What do we call the table used to calculate the probability of an offspring's genotype?
a)
Punnett square
b)
Venn diagram
c)
Golden ratio
d)
Fibonacci sequence
8.

During meiosis and gamete formation, homologous (paired up) alleles split up

a)

Phenotype

b)

Law of Segregation

c)

Genotype

d)

Dihybrid Cross

9.

During meiosis, the homologous pairs of chromosomes and the matching alleles are lined up independently.

Offspring are a mix of maternal genes and paternal genes.

This increases genetic variation.

a)

Homozygous Dominant

b)

Law of Segregation

c)

Crossing Over

d)

Independent Assortment

10.

The ratio of homozygous dominant to heterozygous

to homozygous recessive offspring

a)

Genotypic Ratio

b)

Phenotypic Ratio

c)

Monohybrid Cross

d)

Homologous Pair

11.

The Italian monk/scientist who first showed

the principles of genetics

a)

Watson and Crick

b)

Linnaeus

c)

Darwin

d)

Mendel

12.

This little guy has a homozygous trait for no fur. Choose the best statement.

a)

Both parents gave him an "h". (hh)

b)

He has one "H" and one "h".

c)

He will die without hair.

d)

He is a baby and his hair will grow in a few more days.

13.

What could you conclude about Mendel's short pea plants?

a)

They had one dominant and one recessive gene.

b)

They had a pair of recessive genes.

c)

They had a pair of dominant genes.

d)

They didn't inherit genes.

14.

In the Punnett square what is the probability that flowers will have a white flower?

a)

3 in 4

b)

1 in 4

c)

2 in 4

d)

4 in 4

15.

Which statement about passing traits from parent to offspring through sexual reproduction is true?

a)

Different offspring of the same parents can have different characteristics

b)

All offspring of the same species will be identical to each other

c)

Traits are genetically determined after an organism is born

d)

Only one parent contributes traits to its offspring

16.

Each one of the boxes on the Punnett Square represents what probability of an offsprings' genotype?

a)

25%

b)

50%

c)

100%

d)

0.25%

17.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
18.
A tall plant (TT) is crossed with a tall plant (Tt).  What is the genotype?
a)
2 TT: 2 Tt: 0 tt
b)
1 TT: 2 Tt: 1 tt
c)
2 TT: 1 Tt: 1 tt
d)
0 TT: 0 Tt: 4 tt
19.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
20.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
21.
Two heterozygous red flower (white flowers are recessive) are crossed. What is the phenotype?
a)
75% red and 25% white
b)
25% red and 75% white
c)
100 White 
d)
50% red 50% red 
22.
In guinea pigs, the allele for short hair is dominant over the allele for long hair.
B = short 
b = long
What would the cross be for two heterozygous guinea pigs?
a)
BB X BB
b)
BB X Bb
c)
Bb X Bb
d)
bb X bb
23.
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
24.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
25.
In a ____________ cross, one pair of contrasting traits are being crossed.
a)
monohybrid
b)
dihybrid
c)
trihybrid
d)
quadhybrid
26.
In a dihybrid cross, _________ pairs of contrasting traits are being crossed.
a)
one 
b)
two
c)
three
d)
four
27.

In a plant called jimsonweed, flowers can be white or purple. A jimsonweed plant with white flowers is crossed with a jimsonweed plant with purple flowers. All of the offspring have purple flowers.

Based on the results of the cross, which of the following statements most likely describes the alleles for flower color in jimsonweed?

a)

The allele for purple flowers is recessive to the allele for white flowers.

b)

The allele for purple flowers is dominant to the allele for white flowers.

c)

The allele for purple flowers has mutated more times than the allele for white flowers.

d)

The allele for purple flowers is on a different chromosome than the allele for white flowers.

28.

Based on the accomplished Punnett square, what is the phenotypic Ratio?

a)

1:2:1

b)

3:2

c)

3:1

d)

1:3:1

29.

Which type of inheritance concerns traits that are located on the X chromosome?

a)

Sex-linked

b)

dominance

c)

codominance

d)

Incomplete dominance

30.

John and his wife are ready to start a family, but they are concerned about having a child inherit a disease. This disease is an autosomal recessive disorder that requires both parents to contribute a recessive allele in order for the child to express the disorder. If both John and his wife are heterozygous for this trait, what is the probability that one of their children will have the disease?

a)

25%

b)

50%

c)

75%

d)

100%

31.
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
32.

If an individual possesses two recessive alleles for the same trait, the individual is said to be __________.

a)

diploid for the trait

b)

Heterozygous for the trait

c)

Haploid for the trait

d)

Homozygous for the trait

33.

What is the GENOTYPIC ratio of a monohybrid cross between two heterozygous parents?

a)

3:1

b)

1:2:2:1

c)

1:2:1

d)

9:3:3:1

34.
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
35.
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
36.
A male beetle has the genotype Ttbb. If this beetle mates with a female with genotype TTBb, what is the chance their offspring will have the genotype TtBb?
a)
3/16
b)
4/16
c)
8/16
d)
12/16
37.
bb is an example of
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
d)
none of these
38.
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
39.
Different forms of genes:
a)
alleles
b)
phenotype
c)
genotype
d)
homologous chromosomes
40.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
41.
What is the genotype ratio for crossing a heterozygous red flower with a white flower?
a)
0:2:2
b)
2:2:0
c)
1:2:1
d)
0:0:4
42.

Which type of inheritance concerns traits that are located on the X chromosome?

a)

sex-linked

b)

codominance

c)

incomplete dominance

d)

complete dominance

43.

If an individual possesses two recessive alleles for the same trait, the individual is said to be __________.

a)

homozygous dominant

b)

homozygous recessive

c)

heterozygous

d)

transgenic

44.

What is the name for a cross that examines the inheritance of TWO traits instead of one?

a)

homozygous

b)

heterozygous

c)

monohybrid

d)

dihybrid

45.

In the case of CODMINANT alleles, a plant that is homozygous for red flowers that is crossed with a plant that is homozygous for white flowers will produce flowers that are __________.

a)

pink and red

b)

red and white spotted

c)

dark pink all over

d)

white

46.

What is the name of an organism that contains one or more genes from another organism?

a)

Transgenic

b)

clone

c)

heterozygous

d)

mutant

47.

Blood type in humans is controlled by three alleles I^A, I^B, and i. Genotypes of each of the four possible blood types are shown in the table below. A man with blood type A, whose mother was blood type O, marries a woman that has blood type AB. Which blood types are possible, for future children, if they try to have children?

a)

Types A and B only

b)

Types A, B, and AB only

c)

Types A, B, and O only

d)

All types are possible

48.

Look at the individual on row II, number 3. How would you classify this individual?

a)

affected male

b)

carrier male

c)

carrier female

d)

affected female

Similar Resources on Wayground

Unit 8 Ecology and Evolution Review

50 questions

Unit 8 Ecology and Evolution Review

quiz

Worksheet

•

9th - 10th Grade

Bones of the Axial skeleton

45 questions

Bones of the Axial skeleton

quiz

Worksheet

•

11th - 12th Grade

Semester Exam Review

48 questions

Semester Exam Review

quiz

Worksheet

•

9th - 10th Grade

Grade 10 Biology 2. Exam ; Semester 1

50 questions

Grade 10 Biology 2. Exam ; Semester 1

quiz

Worksheet

•

10th Grade

Human digestion

45 questions

Human digestion

quiz

Worksheet

•

10th - 12th Grade

Review: Basic Mendelian Genetics

45 questions

Review: Basic Mendelian Genetics

quiz

Worksheet

•

11th Grade

Plants Unit Test

49 questions

Plants Unit Test

quiz

Worksheet

•

9th Grade - University

Ch 9 Transport in animals

45 questions

Ch 9 Transport in animals

quiz

Worksheet

•

9th Grade