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Genetics Unit

Total questions: 26

Worksheet time: 29mins

Name
Class
Date
1.
Which type of reproduction is taking place?
 
The female salamander lays its eggs on a stick or rock near water or on land.  Some salamander species bury themselves with their eggs underground to keep them safe. 
a)
Asexual reproduction with uniform offspring
b)
Sexual reproduction with diverse offspring
c)
Asexual reproduction with diverse offspring
d)
Sexual reproduction with uniform offspring
2.
This occurs when an offspring grows from a piece of its parent. Examples include Sea Stars, Sea urchins, sea cucumber, sponges, and planarians
a)
Vegetative propagation
b)
Budding
c)
Regeneration
d)
Fission
3.
Reproduction in prokaryotes that forms two genetically identical cells. DNA is copied and the cell begins to grow longer, pulling the two copies apart. Cell splits to form two new uniform, identical offspring. Examples of this include bacteria, ameoba
a)
Budding
b)
Binary Fission
c)
Vegetative propagation
d)
Regeneration
4.

Over time, some plants have been breed and reproduced in order to produce bigger and bigger fruit that will sell for higher prices.

Is this the result of sexual or asexual reproduction?

a)

Sexual

b)

Asexual

5.
Offspring are genetically identical to the one parent.
Is this the result of sexual or asexual reproduction?
a)
Asexual 
b)
Sexual
6.
How many parent(s) are needed for sexual reproduction?
a)
1
b)
9
c)
4
d)
2
7.

How many parent(s)are needed for asexual reproduction?

a)

4

b)

1

c)

9

d)

2

8.

All of the offspring of an organism have the same genetic material, which is identical to the parent organism. From this, we can conclude that this organism -

a)

makes its own food

b)

is unicellular

c)

lives in a marine habitat

d)

reproduces asexually

9.

A population of lizards live on an island where no other lizards can enter or exit. What is the only way new traits can be introduced into the population?

a)

Natural Selection

b)

Artificial Selection

c)

Selective Breeding

d)

Mutations

10.

Which of the following is an example of a helpful mutation?

a)

Develops speed

b)

Develop a tumor

c)

Loses hearing

d)

Loses camflauge

11.

Mutations can be negative because

a)

They can cause genetic disorders.

b)

They can improve chances survival.

c)

They can help an organism thrive in its environment.

d)

They can affect offspring.

12.
What causes mutations?
a)
Mistakes in replication or environmental substances
b)
The amino acids
c)
Passed down by genetics
d)
It's how your born
13.

A farmer wants to grow extra-large, sweet oranges. Which plants should the farmer select to cross to get the desired set of characteristics?

a)

1 and 2

b)

2 and 4

c)

1 and 3

d)

4 and 5

14.

The purpose of selective breeding is to

a)

get bigger animals

b)

get smaller animals

c)

create animals with desirable traits

d)

create animals with bad traits

15.

A farmer wants to grow a crop that is resistant to disease while producing more fruit per plant. Which plants should the farmer select to cross to get the desired combination of traits?

a)

1 and 2

b)

2 and 4

c)

1 and 3

d)

3 and 4

16.
Homozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
17.
Heterozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
18.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both 
19.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
20.
B = brown fur  b = white fur
In the punnett square, what is the probability for white fur? 
a)
0%
b)
25%
c)
50%
d)
75%
21.
In the punnett square shown, what must the genotype of the missing parent be?
a)
BB
b)
Bb
c)
bb
d)
Tt
22.

Putting the gene for bioluminescence into a fish is an example of...

a)

Genetic Engineering

b)

Cloning

c)

Line Breeding

d)

Gene Mutation

23.

Making changes in the DNA of an organism is know as

a)

cloning

b)

artificial selection

c)

genetic engineering

d)

hybridization

24.

Which term refers to a farmer choosing the best corn from this year to plant next year?

a)

natural selection

b)

selective breeding

c)

genetic engineering

d)

cloning

25.

In which ways can genetic engineering can improve crops

a)

Make them pest or drought resistant

b)

Make them more nutritious

c)

Make them larger

d)

All answers are correct

26.

____ is an application of genetic engineering that involves the insertion of "normal" genes into cells with defective genes in order to correct genetic disorders.

a)

gene gun

b)

gene mapping

c)

gene linkage

d)

gene therapy