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Unit 3 CE Review

Total questions: 30

Worksheet time: 24mins

Name
Class
Date
1.

Selective breeding is...

a)

a process to create an organism with desired traits from parents with those desired traits

b)

natural method of producing offspring with desired traits

c)

creating a new species

d)

making organisms reproduce during times of stress

2.

An example of selective breeding is

a)

a dog breeder mating 2 dogs to make more dogs

b)

a farmer grows bees to pollinate the plants on his farm

c)

a person pollinates 2 white rose plants to only create white roses

3.

One problem with selective breeding is

a)

creating a new species

b)

gene variety is lost

c)

new food sources

4.
Which is another term for selective breeding?
a)
Artificial selection
b)
Natural Selection
c)
Intelligent selection
5.

Which is NOT a result of selective breeding?

a)

Large seedless watermelons that consumer demand

b)

Bright oranges that are all about the same size

c)

An insect that matches the color of the environment

d)

A dog that has been bred to have short hair

6.
Scientists genetically engineer corn to be immune to corn diseases. This is BENEFICIAL because
a)
This causes corn to be less likely to reproduce
b)
This causes corn to be less likely to survive
c)
This causes corn to be smaller
d)
This allows increased production of corn
7.
GMO stands for
a)
genetically made organism
b)
genetically modified organism
c)
gene manipulated organism
d)
Genetic mutant organism
8.
Genes are found on
a)
ribosomes
b)
Chromosomes
c)
lysosomes
d)
endoplasmic reticulum
9.
What is genetic engineering?
a)
Manipulation/addition of genes
b)
Naturally breeding two animals with desired traits
c)
Cross-pollinating two crops
d)
Harvesting stem cells
10.
You have benefited from selective breeding by having more agricultural produce than would have been possible otherwise.
a)
True
b)
False
11.
What is the benefit of geneticially modified organisms?
a)
They may be better looking or more productive/effective
b)
They are easily reproduced
c)
They are higher in population
d)
They live longer/stronger
12.
What are genetically modified (GM) organisms and GM foods?
a)
Foods with higher quantities
b)
Organisms with more fur
c)
Foods or organiisms with DNA modified in a way that doesn't occur naturally
d)
Food and organisms that have been injected with hormones
13.
Dominant or recessive?
tt
a)
Dominant 
b)
Recessive
14.
Dominant or recessive?
Dd
a)
Dominant
b)
recessive
c)
neither
d)
homozygous
15.
When the allele combination is a dominate and a recessive trait together which trait will be seen?
a)
Dominate
b)
Recessive
c)
none
d)
both
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.
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%
18.
Aa is
a)
homozygous (purebred)
b)
heterozygous (hybrid)
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.
What is the probability of heterozygous offspring?
a)
25%
b)
50%
c)
0%
d)
100%
21.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
22.
Each one of the boxes on the Punnett Square represents what probability of an offsprings' genotype?
a)
25%
b)
1%
c)
10%
d)
0%
23.

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%

24.

Budding, Parthenogenesis, Regeneration & Binary Fission are this type of reproduction:

a)

Asexual Reproduction

b)

Sexual Reproduction

c)

Symmetrical Reproduction

d)

Asymmetrical Reproduction

25.

Which type of reproduction requires the use of a sperm and egg?

a)

Sexual Reproduction

b)

Asexual Reproduction

c)

Mitosis

26.

Which of these is one of the advantages of asexual reproduction?

a)

It can use one or two parents

b)

Doesn't require as much energy as sexual reproduction

c)

Very few offspring are usually created

d)

Creates genetic diversity

27.

The offspring of sexual reproduction are genetically _____________.

a)

identical

b)

the same

c)

different

d)

clones

28.

A positive aspect (thing) about sexual reproduction is that there is/are ______________________.

a)

no genetic diversity

b)

all clones being produced

c)

genetic diversity

29.

The offspring of asexual reproduction are genetically _____________. (select two)

a)

identical (the same)

b)

diverse

c)

different

d)

clones

30.

A negative aspect (thing) about asexual reproduction is that there is/are ______________________.

a)

no genetic diversity

b)

sperm and eggs being made

c)

genetic diversity

d)

possible difficulty in finding a mate if you are a rare species

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