Free Printable 15.1 Pedigrees

1.

How many alleles does a child get from each parent for a trait?

a)

1

b)

2

c)

3

d)

4

2.

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

a)

Dominant male.

b)

Dominant female.

c)

Recessive male.

d)

Recessive female.

3.

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

a)

Dominant female.

b)

Dominant male.

c)

Recessive male.

d)

Recessive female.

4.

If this recessive pedigree, what MUST the genotype of individual 4 be?

a)

RR

b)

Rr

c)

rr

d)

R ?

5.

If this recessive pedigree, what MUST the genotype of individual 6 be?

a)

RR

b)

Rr

c)

rr

d)

R ?

6.

If this recessive pedigree, what MUST the genotype of individual 2 be?

a)

RR

b)

Rr

c)

rr

d)

R ?

7.

If this recessive pedigree, what MUST the genotype of individual 7 be?

a)

RR

b)

Rr

c)

rr

d)

R ?

8.

What is the genotype of D?

a)

RR

b)

Rr

c)

R ?

d)

rr

9.

What is the genotype of the mother?

a)

BB

b)

bb

c)

Bb

d)

BB or Bb

10.

What is the genotype of J?

a)

RR

b)

Rr

c)

R ?

d)

rr

11.

What is the genotype of C?

a)

RR

b)

Rr

c)

R ?

d)

rr

12.

What is the genotype of A?

a)

RR

b)

Rr

c)

R ?

d)

rr

13.

What do half colored symbols represent?

a)

The individual is a carrier (heterozygous).

b)

The individual expresses the trait.

c)

The individual has both recessive alleles.

d)

The individual has both dominant alleles.

14.

How many generations are shown in this pedigree?

a)

1

b)

2

c)

3

d)

4

15.

In a heterozygous genotype, the _____ allele takes over in the phenotype.

a)

recessive

b)

dominant

c)

both

16.

What is the genotype of the mother?

a)

BB

b)

Bb

c)

bb

17.

What is the Genotype of individual II-6?

a)

FF

b)

Ff

c)

ff

d)

Can't know for sure

18.

What is the Genotype of individual III-2?

a)

FF

b)

Ff

c)

ff

d)

Can't know for sure

19.

If this pedigree shows a recessive disorder, what MUST the genotype of individual 4 be?

a)

HH

b)

Hh

c)

hh

20.

How many males are shown in this pedigree?

a)

8

b)

5

c)

2

d)

16

21.

How many daughters did the mother and father from the first generation have?

a)

2

b)

4

c)

5

d)

6

15.1 Pedigrees

Total questions: 21

Worksheet time: 41mins

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