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WorksheetsGenetics Unit Review
Total questions: 60
Worksheet time: 37mins
Name
Class
Date
1.
The man who studied genetics and came up with genetics is
a)
Watson
b)
Crick
c)
Mendel
d)
Darwin
2.
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
3.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
4.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
5.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
6.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
7.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
8.
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%
9.
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
10.
This is an example of what?
a)
Complete dominance
b)
Incomplete dominance
c)
Codominance
d)
None of the above
11.
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%
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.
Term for homozygous organisms that display two dominant phenotypes at the same time
a)
codominance
b)
incomplete dominance
c)
multiple alleles
d)
linked genes
14.
The inherited combination of alleles is known as the offspring's
a)
heredity
b)
phenotype
c)
genotype
d)
redigree
15.
An allele whose trait always shows up in the organism when the allele is present.
a)
recessive allele
b)
dominant allele
c)
hidden allele
d)
present allele
16.
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
17.
one set of instructions for an inherited trait
a)
heredity
b)
allele
c)
trait
d)
gene
18.
one of the alternative forms of a gene that governs a characteristic, such as hair color
a)
allele
b)
gene
c)
trait
d)
DNA
19.
an organism's appearance or other detectable characteristic
a)
genotype
b)
phenotype
c)
genetics
d)
heterozygous
20.
genetic makeup
a)
phenotype
b)
genotype
c)
heterzygous
d)
allele
21.
the chances of something happening
a)
dominant
b)
genotype
c)
phenotype
d)
probability
22.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
23.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
24.
father of genetics
a)
Gregor Mendel
b)
James Watson
c)
Dr. Robbins
d)
Francis Crick
25.
A characteristic that an organism can pass on to its offspring through its genes
a)
protein
b)
trait
c)
DNA
d)
gene
26.
Which of the following alleles is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
27.
In humans, skin tone is caused by 3 genes, each with 2 alleles. This is an example of
a)
codominance
b)
incomplete dominance
c)
polygenic inheritance
d)
multiple alleles
28.
This image shows a...
a)
Punnett Square
b)
Phenotype
c)
Genotype
d)
Dominant allele
29.
Dominant alleles are-
a)
capital
b)
lowercase
c)
both
d)
neither
30.
Recessive alleles are-
a)
capital
b)
lowercase
c)
both
d)
neither
31.
The yellow part of this picture is DNA. What do you think the turquoise part around it is?
a)
chromosome
b)
gene
c)
DNA
d)
ACTG
32.
What is a gene?
a)
A bundle (like a hot dog bun) that the DNA is packed into
b)
something inside the nucleus
c)
a piece of DNA
d)
all of your DNA
33.
What is the human genome?
a)
a piece of DNA
b)
a chromosome
c)
all of your cells
d)
all of your DNA
34.
The twisted ladder shape of DNA is referred to as a ....
a)
Twizzler candy
b)
twisted ladder
c)
double helix
d)
yo mama
35.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
36.
Why is DNA important?
a)
it is very small and very complicated
b)
it's in everything
c)
it serves as the blueprint for traits of all living things
d)
because we eat it every day for energy
37.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
chloroplast
d)
nucleus
38.
A change in DNA or chromosomes
a)
Mitosis
b)
Meiosis
c)
mutation
d)
Osmosis
39.
A _________ is DNA tightly coiled around proteins.
a)
gene
b)
chromosome
c)
trait
d)
mutation
40.
An organism's reproductive cells, or sex cells, are called _____.
a)
bacteria
b)
prokaryotes
c)
gametes
d)
pathogens
41.
The 2 exact copies of DNA in a chromosome are called ________.
a)
chromatids
b)
genes
c)
mutations
d)
pathogens
42.
Chromosomes that are paired by size and content are called _______ chromosomes.
a)
homeostasis
b)
homologous
c)
matching
d)
sister
43.
Body cells are also called _________ cells.
a)
normal
b)
prokaryotic
c)
pathogens
d)
somatic
44.
Cells that contain 2 sets of chromosomes are called _________ (2n).
a)
diploid
b)
haploid
c)
triploid
d)
polyploid
45.
Cells that contain only ONE set of chromosomes are called ________ (n).
a)
diploid
b)
polyploid
c)
triploid
d)
haploid
46.
The 23rd pair of chromosomes that do determine the sex of an individual are called ___________.
a)
sex chromosomes
b)
autosomes
c)
homologous
d)
genes
47.
The 2 female sex chromosomes are ___.
a)
XY
b)
XX
48.
The 2 male sex chromsomes are _____.
a)
XY
b)
XX
49.
This produces 2 identical cells.
a)
mitosis
b)
meiosis
50.
What phase is shown in the picture?
a)
anaphase 1
b)
anaphase 2
c)
metaphase 1
d)
telophase 1
51.
If the Diploid number of Carrots is 18, the haploid number is
a)
18
b)
9
c)
27
d)
36
52.
What causes genetic variation in meiosis?
a)
chromosomes lining up
b)
crossing over of chromosomes
c)
separation of chromosomes
d)
chromosomes pulling apart
53.
If a somatic cell in a butterfly contains 24 chromosomes, a butterfly egg would contain
a)
3
b)
6
c)
12
d)
24
54.
When homologous chromosomes match up, they form a structure call a ___________.
a)
tetrad
b)
triad
c)
diploid
d)
gamete
55.
What phase is represented?
a)
metaphase 1
b)
metaphase 2
c)
anaphase 1
d)
anaphase 2
56.
What phase is shown in the picture?
a)
metaphase 2
b)
anaphase 2
c)
metaphase 1
d)
telophase 1
57.
Identify the phase.
a)
Metaphase I
b)
Metaphase II
c)
Anaphase I
d)
Anaphase II
58.
Identify the phase.
a)
Telophase I
b)
Telophase II
c)
Metaphase I
d)
Metaphase II
59.
Is the following cell diploid or haploid?
a)
Diploid
b)
Haploid
60.
In mitosis cells are genetically _______, but in meiosis cells are genetically ______.
a)
diverse, identical
b)
identical, diverse/different
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