Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Mendelian Genetics, CPOI + Pedigrees 2023

Total questions: 38

Worksheet time: 2hrs 47mins

Name
Class
Date
1.

Which of the following is an example of Genotype?

a)

Tt

b)

Tall

2.

Which of the following Genotypes would be considered heterozygous

a)

BB

b)

gg

c)

Ff

d)

TT

3.

Which of the following is a Phenotype?

a)

Bb

b)

Brown Eyes

4.
Dominant or recessive?
tt
a)
Dominant 
b)
Recessive
5.
_____________________ is the appearance of an organism, or how it looks
a)
phenotype
b)
ratio
c)
recessive trait
d)
heredity
6.
TT,tt,PP,pp,SS,ss are examples of alleles that are?
a)
homozygous
b)
heterozygous
c)
different
d)
homologous 
7.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both 
8.
Colorblindness is a recessive, X chromosome sex-link disorder. Cross the parents to figure out which percentage of their offspring will be colorblind.
a)
25%
b)
0%
c)
75%
d)
50%
9.
The genotypic ratio here is
a)
25% blue eye 75 % brown eye 
b)
BB = 25% Bb = 50% bb = 25%
c)
BB= 50 % bb = 50%
d)
All brown eye
10.
A breed of chicken shows codominance for feather color. One allele codes for black feathers, another codes for white feathers. The feathers of heterozygous chickens of this breed will be:
a)
all black
b)
all white
c)
all gray
d)
speckled black and white
11.
This type of inheritance pattern is a MIXTURE of both traits.
a)
incomplete dominance
b)
co-dominance
c)
complete dominance
12.
A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?
a)
Incomplete Dominance
b)
Co dominance
13.
This is an example of ___________.
a)
Incomplete Dominance
b)
Codominance
14.

A female is born with attached earlobes, which is a recessive phenotype. Which of the following genotypes could her parents have?

a)

RR and RR

b)

Rr and rr

c)

Rr and RR

d)

RR and rr

15.
Genetic crosses involving a particular type of flower exhibit complete dominance with respect to petal color. Red (R) is dominant to white (r). Using the Punnett square, what is the expected percentage of offspring that will have white flowers from a cross of parent flowers with a genotype of Rr.
a)
0%
b)
25%
c)
50%
d)
100%
16.
When a man has an allele combination Ww for a trait, what percentage of his gametes will have a dominant allele for that trait?
a)
25%
b)
50%
c)
75%
d)
100%
17.
In a certain species of rabbits, black coat color is dominant over brown coat color. What is the probability of producing a rabbit with brown coat color from two rabbits that are both heterozygous for black coat color?
a)
0%
b)
25%
c)
75%
d)
100%
18.

B represents the gene for brown coat color in a

certain species of rabbit and b represents the

gene for white coat color. A breeder crosses a

Homozygous Brown rabbit with a white rabbit.

Which of the following represents the genotypes

for these parents.

a)

BB X bb

b)

Bb X Bb

c)

Bb X Bb

19.
Which term is correctly matched with the description?
a)
Co-dominance occurs when two traits blend together to form a new phenotype.
b)
Human skin color is an example of codominant  trait.
c)
Incomplete dominance occurs when traits blend producing a third  phenotype.
d)
Human blood type is not an example of multiple alleles.
20.
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
21.
Determine the phenotypic ratio of the offspring for a tall plant (Tt) crossed with a short plant (tt). 
a)
100% Tall
b)

50% Tall 50%short
c)
50% Tt50%tt
d)
100% TT
22.
T2 - Which observation of dihybrid crosses led to Mendel's law of independent assortment
a)
Particular individual traits persisted for many generations
b)
Many combinations of traits were always inherited together
c)
Some combinations of traits were not passed onto offspring
d)
The presence of one trait didn't affect the presence of another
23.

The fact that the parents' genes are split among

the gametes is known

a)

gene mutation

b)

non-disjunction

c)

segregation

d)

hybridization

24.

Fruit flies can have red eyes or white eyes. If a

heterozygous red-eyed fly and a homozygous

white-eyed fly produced 50% red-eyed offspring

and 50% white-eyed offspring, which of the

following is true of the traits?

a)

Having red eyes and having white eyes are both

recessive traits.

b)

Having red eyes is a recessive trait, while having

white eyes is dominant.

c)

Having red eyes and having white eyes are both

dominant traits.

d)

Having red eyes is a dominant trait, while having

white eyes is recessive.

25.
Give the genotype for person III-3
a)
GG
b)
Gg
c)
gg
26.
Give the genotype for person II-1
a)
GG
b)
Gg
c)
gg
27.

The blending of two traits is known as ---

a)

incomplete dominance

b)

codominance

28.

What type of inheritance pattern is shown here?

a)

Codominance

b)

Incomplete dominance

29.

What does this Punnett square and the probabilities of the ofspring represent?

a)

incomplete dominance

b)

codominance

30.
this image is an example of
a)
codominance
b)
dominance
c)
incomplete dominance
31.

A red flowered plant (RR) is crossed with a white flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance. What percentage of the offspring will have red (RR) flowers?

a)

0%

b)

25%

c)

50%

d)

100%

32.

The diagrams below show two pairs of

homologous chromosomes present in the diploid

cells of a fruit fly. The locations of the alleles for

head shape and wing color are marked. What must be true about the gene for wing color?

a)

it is independent of head shape

b)

it is dominant over head shape

c)

it is linked to head shape

d)

it is recessive to head shape

33.

Which combination of sex chromosomes results in a male?

a)

XX

b)

YY

c)

XY

34.

In a certain species of plant, the color purple (P) is dominant to the color white (p). According to the Punnett Square, what is the probability of an offspring being white?

a)

25%

b)

0%

c)

100%

d)

50%

35.

Hemophilia is a recessive x-linked disorder. Which genotype represents a female who is a carrier/heterozygous for hemophilia?

a)

XHXh

b)

XhXh

c)

XHXH

d)

XhY

36.

Hemophilia is a recessive x-linked disorder. Which genotype represents a male who does not carry the gene for hemophilia?

a)

XHXh

b)

XhXh

c)

XHY

d)

XhY

37.

Which of the following will be true about their offspring? (Woman who is heterozygous for hemophilia and male without hemophilia)

a)

All of their sons will be hemophiliac.

b)

Half of their children of either sex may receive

the gene for hemophilia.

c)

Half of their daughters may be hemophiliac.

d)

All of their daughters will receive the gene and

be carriers of hemophilia.

38.

Who is most affected by lethal recessive alleles?

a)

heterozygous dominant individuals

b)

homozygous dominant individuals

c)

heterozygous recessive individuals

d)

homozygous recessive individuals

Similar Resources on Wayground

Biology Ch. 1 Test Review

34 questions

Biology Ch. 1 Test Review

quiz

Worksheet

•

10th Grade

1Life processes

40 questions

1Life processes

quiz

Worksheet

•

10th Grade

Science Form 2_Chap 4.2 Body Defence

35 questions

Science Form 2_Chap 4.2 Body Defence

quiz

Worksheet

•

8th - 11th Grade

BIO330 Tutorial 6 Terrestrial Ecosystem

40 questions

BIO330 Tutorial 6 Terrestrial Ecosystem

quiz

Worksheet

•

11th Grade - University

NATURAL SCIENCE TEST: All about food

40 questions

NATURAL SCIENCE TEST: All about food

quiz

Worksheet

•

3rd - 12th Grade

Stage 1 review - Biology in Healthcare

40 questions

Stage 1 review - Biology in Healthcare

quiz

Worksheet

•

10th - 12th Grade

Review Quiz 1 Unit 2: What's in YOUR water?

37 questions

Review Quiz 1 Unit 2: What's in YOUR water?

quiz

Worksheet

•

9th - 10th Grade

Biology 1B Final Review

40 questions

Biology 1B Final Review

quiz

Worksheet

•

9th - 12th Grade