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Genetics Hereditary

Total questions: 20

Worksheet time: 1hrs 6mins

Name
Class
Date
1.

The allelle / (trait) that is "weaker". The offspring will not have the trait represented unless there are two of these.

a)

recessive allele

b)

dominant allele

c)

co-dominant allele

2.

How many chromosomes do humans have?

a)

46

b)

23

c)

96

d)

21

e)

43

3.

Characteristics passed from parents to their offspring.

a)

behavior

b)

learned trait

c)

inherited trait

d)

acquired trait

4.
The dominant trait is
a)
yellow pea seeds
b)
green pea seeds
c)
there is no dominant seed
d)
Jolly green giant
5.
What is a gene?
a)
An entire chromosome that  codes for a trait
b)
a piece of clothing
c)
a piece of a DNA on chromosome that codes for a trait
d)
Chemical messengers in your brain that code for a trait
6.

Which would be an example of a trait shaped by their environment?

a)

Eye color

b)

Hair color

c)

Language they speak

d)

Height

7.

Which characteristic did Jordan most likely inherit from his parents?

a)

his ability to read fast

b)

his need to wear glasses

c)

his ability to speak English

d)

his need to count using his fingers

8.

Chromosomes are found in the ____________ of the cell

a)

Chloroplast

b)

Nucleus

c)

Cytoplasm

d)

Mitochondria

e)

Vacuole

9.
The passing of DNA from parents to offspring
a)
Generation
b)
Heredity
c)
Inheritance
d)
Traits
10.
What is a gene?
a)
An entire chromosome that  codes for a trait
b)
a piece of clothing
c)
a piece of a DNA on chromosome that codes for a trait
d)
Chemical messengers in your brain that code for a trait
11.

Which organelle is DNA usually found in?

a)

cell membrane

b)

vacuole

c)

chloroplast

d)

nucleus

e)

cytoplasm

12.
Are recessive traits shown with capital or lowercase letters? 
a)
Capital
b)
Lowercase
13.

The gender of an offspring is determined by ______________________.

a)

the mother

b)

the father

c)

the mother and the father

d)

by the environment

14.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
15.

Which is the stronger gene that always shows itself?

a)

Hybrid

b)

Dominant

c)

Pure

d)

Recessive

16.

What is the dominant eye color?

a)

Blue

b)

Green

c)

Brown

d)

Hazel

e)

White

17.

What is the recessive hairline?

a)

Widow's peak

b)

No widow's peak

c)

None

d)

Both

18.

This girl has dominant traits? What are they? Select ALL that apply.

a)

Blue eyes

b)

Freckles

c)

Brown hair

d)

Straight hair

e)

Anger

19.

What dominant traits does this girl have? Select ALL that apply.

a)

Dominant brown eyes

b)

Dominant curly hair

c)

Dominant brown hair

d)

Recessive left handedness

e)

Dominant broad brows

20.

Genes are the basic unit of...

a)

genes

b)

cells

c)

heredity

d)

biology

e)

life