Free Printable B - basic genetics - punnett sq & pedigree -

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Worksheets

B - basic genetics - punnett sq & pedigree -

Total questions: 55

Worksheet time: 1hrs 19mins

Name

Class

Date

1.

Which of the following is a phenotype?

a)

BB

b)

Bb

c)

bb

d)

Blue eyes

2.

What is a phenotype

a)

The genetic make up (code)

b)

The physical trait

3.

having two of the same genes for the trait (sometimes called purebred).

a)

homozygous

b)

hetrozygous

c)

protein

d)

chromosome

4.

having two different genes for a trait (sometimes called hybrid).

a)

protein

b)

homozygous

c)

heterozygous

d)

genotype

5.

father of genetics

a)

Gregor Mendel

b)

James Watson

c)

Dr. Robbins

d)

Francis Crick

6.

Which is the correct phenotype for this organism?

a)

BB

b)

blue

c)

green

d)

bb

7.

What genotype would go in box 2?

a)

BB

b)

Bb

c)

bb

8.

What is the probability of heterozygous offspring?

a)

0%

b)

100%

c)

50%

d)

25%

9.

What allele combination should go in the missing box?

a)

AA

b)

Aa

c)

aa

d)

none of these

10.

If T=tall and t=short

What is the ratio for short phenotype in this cross?

a)

0:4

b)

1:4

c)

2:4

d)

3:4

11.

What genotype would go in box 1?

a)

BB

b)

Bb

c)

bb

12.

G = green, g = yellow
The genotype for a yellow plant is...

a)

GG

b)

Gg

c)

gg

d)

all of the choices result in yellow

13.

Which of these Punnett squares represents a cross between a homozygous dominant parent and a heterozygous parent?

a)

b)

c)

d)

14.

What is the phenotype of the heterozygous parent in the punnett square?

a)

green

b)

yellow

c)

hybrid

d)

purebred

15.

What are the alleles of highlighted box?

(a)

16.

What are the alleles of highlighted box?

(a)

17.

What are the alleles of highlighted box?

(a)

18.

What are the alleles of highlighted box?

(a)

19.

What are the alleles of highlighted box?

(a)

20.

What are the alleles of highlighted box?

(a)

21.

What are the alleles of highlighted box?

(a)

22.

What is the missing allele for this parent?

(a)

23.

ee

a)

Dominant

b)

Recessive

24.

AA

a)

Dominant

b)

Recessive

25.

Phenotype or Genotype? Blue eyes

a)

Phenotype

b)

Genotype

26.

If A = red fur and a = white fur, what is the probability of red fur?

a)

25%

b)

50%

c)

75%

d)

100%

27.

The study of how different traits are passed from parents to offspring.

a)

genetics

b)

geology

c)

nuclear physics

d)

chemistry

28.

On a pedigree, this symbol represents a ---

a)

not affected female.

b)

not affected male.

c)

affected male.

d)

affected female.

29.

On a pedigree, this symbol represents a ----

a)

not affected male.

b)

not affected female.

c)

affected male.

d)

affected female.

30.

How many individuals are there in the 3rd generation?

a)

1

b)

2

c)

4

d)

6

31.

How are individuals III-2 and II-4 related?

a)

Brother and sister

b)

Dad and daughter

c)

Uncle and niece

d)

Grandfather and granddaughter

32.

Which individual in the first generation is a carrier?

a)

I-1

b)

I-2

33.

Identify the male in generation I.

A

B

C

D

E

F

34.

Identify the individual III-4

A

B

C

D

E

F

G

H

I

J

35.

Identify the individual II-4

A

B

C

D

E

F

G

H

I

J

36.

Which of the following shows how a trait is passed through multiple generations of a family?

a)

Family Square

b)

Genetic Chart

c)

Punnett Square

d)

Pedigree Chart

37.

What is a tool used to predict which genes an offspring can inherit?

a)

Punnett Square

b)

Pedigree Chart

c)

Genetic Chart

d)

Family Square

38.

Gregor Mendel developed some basic principles of heredity by ______________.

a)

breeding fruit flies

b)

cutting off the tails of mice

c)

crossing pea plants

d)

growing bacteria in a laboratory

39.

The different forms of a gene.

a)

Genes

b)

Allele

c)

Phenotype

d)

Pedigree

40.

What goes in box 3

a)

Aabb

b)

AABB

c)

AAbb

d)

aaBb

41.

What goes in box 15

a)

aabb

b)

AABB

c)

aaBB

d)

AAbb

42.

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

a)

9/16

b)

3/16

c)

1/16

d)

16/16

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.

An abnormal condition that a person inherits through their genes or chromosomes or through environmental factors that alter genes.

a)

Disease

b)

Inherit

c)

Genetic disorder

d)

Infection

45.

A sperm contains

a)

Both an X and a Y chromosome

b)

Two X chromosomes

c)

An X OR a Y chromosome

d)

only a Y chromosome

46.

Is this individual male or female?

a)

Male

b)

Female

47.

What is an organized picture of all of an organism’s homologous chromosome pairs lined up with each other?

a)

Pedigree

b)

Karyotype

48.

Which type of chromosome determines if someone will be male or female?

a)

autosomes

b)

sex chromosomes

49.

Which set of chromosomes represents a male?

a)

XX

b)

XY

50.

Which set of chromosomes represents a female?

a)

XX

b)

XY

51.

How many pairs of sex chromosomes do human cells contain?

a)

22

b)

1

c)

46

52.

How many pairs of autosomes do human cells contain?

a)

22

b)

1

c)

46

53.

How many total chromosomes do human cells contain?

a)

23

b)

46

54.

How many pairs of chromosomes do human cells contain?

a)

23

b)

46

55.

How many generations are shown in the pedigree below?

a)

2

b)

4

c)

6

d)

8

Reset

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