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Genetic Practice

Total questions: 42

Worksheet time: 31mins

Name
Class
Date
1.
The trait that covers up the other trait and is written as an uppercase letter is called the
a)
Dominant Trait
b)
Homozygous Trait
c)
Recessive Trait
d)
Heterozygous Trait
2.
The physical appearance of a trait is also known as the _______________________.
a)
Alleles
b)
Genotype
c)
DNA
d)
Phenotype
3.
This is the word for the trait that is covered up by another form of that trait and is written as a lowercase letter....
a)
Recessive
b)
Homozygous
c)
Heterozygous
d)
Dominant
4.
This is the passing of traits from parents to offspring.
a)
Heredity
b)
Genetics
5.

What is an allele?

a)

a pair of chromosomes

b)

the study of heredity

c)

a dominant trait

d)

different forms of a gene

6.

What type of gene is ALWAYS expressed if it is present?

a)

recessive

b)

dominant

c)

allele

d)

hybrid

7.

What is a genotype?

a)

the genes you have

b)

your physical characteristics

8.

A direct manipulation of a gene.

a)

genetic engineering

b)

selective breeding

c)

human selection

d)

inherited trait

9.

One of two or more versions of a gene

a)

trait

b)

gene

c)

allele

d)

hybrid

10.

A behavioral or physical characteristic that is passed from parents to their offspring.

a)

inheritance

b)

genetics

c)

trait

d)

recessive allele

11.

A section of DNA that codes for a specific protein.

a)

gene

b)

offspring

c)

chromosome

d)

phenotype

12.

One of the different forms of a single gene, either dominant or recessive.

a)

Allele

b)

DNA

c)

Chromosome

d)

Genome

13.

The passing of traits from parents to offspring.

a)

allele

b)

dominance

c)

gene

d)

heredity

14.

The allele that needs two copies to express the trait. This is shown by a lower case letter. (ex: r)

a)

dominant

b)

recessive

c)

invisible

d)

genotype

15.

The combination of alleles that an organism has. This determines what trait the organism will have.

a)

genotype

b)

phenotype

c)

homozygous

d)

heterozygous

16.

The physical or behavioral trait that is shown or expressed.

a)

genotype

b)

phenotype

c)

homozygous

d)

heterozygous

17.

When both alleles of a genotype are the same. (either RR or rr)

a)

homozygous

b)

heterozygous

18.

When both alleles of a genotype are different. (example: Rr)

a)

homozygous

b)

heterozygous

19.

What is a genotype?

a)

the genes you have

b)

your physical characteristics

20.
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
21.
Heterozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
22.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both 
23.
G = green, g = yellow
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
all of the choices result in yellow
24.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
25.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
26.

What is the name of the process in which new breeds and varieties of organisms are created using artificial selection?

a)

Artificial selection

b)

Natural selection

c)

Selective breeding

d)

Survival of the fittest

27.

What is the name of the process in which genes from one organism are transferred into the genome of another organism?

a)

Genetic Engineering

b)

Selective breeding

c)

Artificial selection

d)

Survival of the fittest

28.

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

29.
Why aren't more scientists using gene modification?
a)
Because they are poor
b)
Because they are lazy
c)
Because of ethics and morality
d)
Because of how long it takes
30.
It is very common for yellow labs to have bad hips. This is because owners want purebred yellow labs who are good hunting dogs.  This is an example of 
a)
Natural Selection
b)
Selective breeding
c)
Mitosis
d)
Fossil Record
31.
All of the following statements are reasons for selective breeding except:
a)
To produce offspring with desirable characteristics
b)
Farmers increase their profit by improving crops
c)
To improve the quality of food products
d)
To increase migration patterns
32.
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
33.
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
34.

A farmer has bred his pineapple plants from the sweetest pineapples in his last harvest to get even sweeter pineapple plants next time. What is this an example of?

a)

Natural Selection

b)

Genetic Engineering

c)

Selective Breeding or artificial selection

d)

Extinction

35.

Which process is involved in selective breeding?

a)

Allowing organisms to reproduce without human interference

b)

Humans choosing individuals with desirable traits to parent the next generation

c)

Using technology to cut DNA and insert genes to get the traits you want.

36.

Which process is involved with genetic engineering?

a)

Allowing organisms to reproduce without human interference

b)

Humans choosing individuals with desirable traits to parent the next generation

c)

Using technology to cut DNA and insert genes to get the traits you want.

37.

Inserting a gene for bioluminescence (glowing) into fish is an example of...

a)

Genetic engineering

b)

Natural selection

c)

Artificial selection

d)

Selective breeding

38.

A positive reason(s) to genetically modify (GMOs) foods include...

a)

Produce larger fruits

b)

Make pest resistant vegetables

c)

Produce foods that grow faster

d)

All of these are positives of GMOs

39.

A concern(s) about genetically modified foods (GMOs) include..

a)

Risk to human health

b)

Loosing the original genetic line of the food source

c)

May be harmful to ecosystems

d)

All of these are valid concerns

40.

What is recombinant DNA

a)

DNA from 2 different organisms combined

b)

DNA from 2 different ribosomes

c)

DNA that is separated out from a vector

41.

A circular piece of DNA, found in bacteria, is called:

a)

A plasmid

b)

mRNA

c)

Ribosome

d)

Nucleotide

42.

Humans with genetic diseases can have a gene inserted into their body using a virus. This is called:

a)

Gene therapy

b)

Cloning

c)

DNA fingerprinting

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