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Genetics - Test Review

Total questions: 25

Worksheet time: 13mins

Name
Class
Date
1.

This laboratory procedure is known as

a)

CLONING

b)

gel electrophoresis

c)

chromatography

d)

use of a dichotomous key

2.

This technique used to analyze DNA involves the

a)

synthesis of new DNA strands from subunits

b)

separation of DNA fragments based on size

c)

production of genetically engineered DNA molecules

d)

removal of defective genes from DNA

3.
Putting the gene for bioluminescence into a fish is an example of...
a)
Genetic Engineering
b)
Selective Breeding
c)
Artificial Selection
d)
Gene Mutation
4.
Which two bat species are most closely related?
a)
 Bat 1 and Bat 2
b)
Bat 1 and Bat 3
c)
Bat 2 and Bat 3
d)
There’s no way to tell
5.
T6- How do scientists cut DNA into smaller strands?
a)
restriction enzymes
b)
scissors
c)
ligase
d)
agarose
6.

DNA combined from 2 different organisms is called

a)
Bioengineering
b)
Biotechnology
c)
Recombinant DNA
d)

Selective Breeding

7.
Someone has a wild cat breed with a house cat in order to have a cat that looks wild but is more gentle. This is__.
a)
Genetic Modification
b)
Gene Therapy
c)
Animal Husbandry
d)
Selective breeding
8.

Set of techniques used to obtain identical copies of an adult organism from its somatic cells.

a)

Cloning

b)

DNA sequencing

c)

PCR

9.
The dominant trait is
a)
yellow pea seeds
b)
green pea seeds
c)
there is no dominant seed
d)
Jolly green giant
10.

Mutation

a)

an organism that has 2 different alleles for a trait

b)

a pair of chromosomes carrying genes that determine whether a person is male or female

c)

a change in a gene or chromosome

d)

a gene carried on the X or Y chromosome

11.
Why do the fragments of DNA in gel electrophoresis travel away from the negative electrode?
a)
DNA is negatively charged so attracted to the positive end of the unit
b)
DNA is positively charged to attracted to the negative end of the unit
c)
the agarose gel in negatively charged
d)
the agarose gel is positively charged
12.

A ____ is part of the DNA code on a chromosome.

a)

gene

b)

phenotype

c)

genotype

d)

gender

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.

Mutations cause changes in _____.

a)

protons

b)

proteins

c)

electrons

d)

neutrons

15.
What gender has an X and a Y chromosome?
a)
male
b)
female
c)
transgender 
d)
all of the above
16.

What is the primary cause of genetic variation during meiosis?

a)

chromosomes lining up

b)

"crossing over" of chromosomes

c)

separation of chromosomes

d)

chromosomes pulling apart

17.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond
18.

The failure of one or more pairs of homologous chromosomes or sister chromatids to separate "normally" during meiosis is called _____________________.

a)

nondisjunction

b)

anaphase I

c)

nondiploidy

d)

karyotype

19.
Sex cells (gametes) are produced through the process of
a)
mitosis
b)
cytokinesis
c)
binary fission
d)
meiosis
20.
A picture of paired chromosomes is a
a)
sister chromatid
b)
centromere
c)
syndrome
d)
karyotype
21.

The diagram shows the process of crossing over. Which claim about crossing over in chromosomes is best supported by the diagram?

a)

Crossing over increases genetic diversity through deletion.

b)

Crossing over decreases genetic diversity through mutation.

c)

Crossing over increases genetic diversity by creating new combinations of genes.

d)

Crossing over decreases genetic diversity by inserting nucleotides into gene sequences.

22.

Taking a gene from one species and putting it in another

a)

Environmental Variation

b)

Genetic Variation

c)

Adaptive Feature

d)

Genetic Engineering

23.
Why are insertion and deletion (frameshift) mutations so harmful?
a)
They change all of the codons from the mutation on down the line, which changes the amino acid sequence
b)
They insert things that an organism doesn't need.
c)
They often delete things that organisms need.
d)
Insertion and deletions are not any more harmful than substitution mutations.
24.
Which of the following can increase the rate of mutation?
a)
UV Radiation
b)
Viruses
c)
toxic chemicals 
d)
All of the above
25.
How does sexual reproduction result in a variation among offspring?
a)
Organisms usually inherit their traits from the parent that lives in the same environment.
b)
Each gene version provides a unique set of instructions to make a protein.
c)
Protein molecules interact with other protein molecules.
d)
Each parent randomly passes on one of its two copes of each gene to its offspring.

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