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Unit 5 Review

Total questions: 20

Worksheet time: 22mins

Name
Class
Date
1.

Heredity is the passing of traits from _____________________ to _____________________

a)

predators to prey

b)

water to rain

c)

parents to offspring

d)

offspring to parents

2.

If a child has red hair, they inherited a certain _______________ from their parents.

a)

ratio

b)

trait

c)

probability

d)

ability

3.

True or False:

We get 1/2 of our genes from our mother and 1/2 of our genes from our father

a)

True

b)

False

4.
Which of these is an acquired trait?
a)
Having blue eyes
b)
Pierced ears
c)
The ability for a baby to cry
d)
Freckles
5.

Different versions of the same gene are called

a)

Jeans

b)

Editions

c)

Varieties

d)

Alleles

6.

A trait that is expressed if one copy of the allele is present is a(n)

a)

characteristic

b)

dominant trait

c)

gene

d)

recessive trait

7.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
8.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
9.

having two different genes for a trait

a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
10.
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%
11.
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
12.
Snapdragon flowers come in red, pink and white.  What type of inheritance is this?
a)
Complete Dominance
b)
Incomplete Dominance
c)
Codominance
d)
Polygenic Inheritance
13.
Incomplete dominance means that the traits are
a)
expressed equally
b)
dominant
c)
recessive
d)
blended
14.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
15.
 Dominant alleles are-
a)
capital
b)
lowercase
c)
both
d)
neither
16.
 Recessive alleles are-
a)
capital
b)
lowercase
c)
both
d)
neither
17.
How many chromosomes are in a normal human body cell?
a)
23
b)
46
c)
92
18.
Which of the following describes how the genes are described?
a)
genotype
b)
phenotype
19.
Which of the following describes how the organism looks?
a)
genotype
b)
phenotype
20.

If a brown-eyed mother and a blue-eyed father have four children, three will probably have brown eyes. What can you conclude from this?

a)

Brown eyes are a successful trait

b)

Brown eyes are a submissive trait

c)

Brown eyes are a recessive trait

d)

Brown eyes are a dominant trait

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