WorksheetsPunnett Square/DNA Test
Total questions: 27
Worksheet time: 14mins
Name
Class
Date
1.
Why is DNA important?
a)
it's in everything
b)
it is very small and very complicated
c)
it serves as the blueprint for traits of all living things
d)
because we eat it every day for energy
2.
DNA is found in which organelle inside cells?
a)
cell membrane
b)
chloroplast
c)
vacuole
d)
nucleus
3.
What does DNA stand for?
a)
Deoxyribonucleic acid
b)
Deribonucleic acid
c)
Denitrogenous acid
d)
Diribonucleic acid
4.
What are the 3 parts of a nucleotide?
a)
Sugar, Phosphate, nitrogen base
b)
Thymine, Adenine, Cytomine
c)
Phosphate, Adenine, nitrogen base
d)
Phosphate, Nitrogen, Adenine
5.
The sugar in DNA is called ?
a)
glucose
b)
fructose
c)
deoxyribose
d)
smarties
6.
Which 2 molecules form the sides (backbone) of the DNA ladder?
a)
sugar and adenine
b)
sugar and hydrogen bonds
c)
sugar and phosphate
d)
sugar and a nucleus
7.
Which kind of molecules make up the rungs/steps of the DNA "ladder"?
a)
sugars
b)
phosphates
c)
nitrogen bases
d)
hydrogens
8.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
9.
Guanine bonds with ______________.
a)
Adenine
b)
Cytosine
c)
Guanine
d)
Thymine
10.
Which shows the correct complementary base pairing for DNA?
a)
C-G, U-A
b)
C-A, T-G
c)
A-G, C-T
d)
T-A, G-C
11.
The two halves of a DNA molecule are held together at the bases that meet in the middle, with what kind of bond?
a)
covalent
b)
ionic
c)
hydrogen
d)
family
12.
How many hydrogen bonds bind A and T together?
a)
3
b)
0
c)
4
d)
2
13.
How many bonds bind guanine and cytosine together?
a)
2
b)
0
c)
4
d)
3
14.
Which sequence of DNA bases would pair with this partial strand ATG TGA CAG
a)
ATG TGA CAG
b)
GTA AGT GAC
c)
TAC ACT GTC
d)
CAT TCA CTG
15.
Gregor Mendel worked as a
a)
professor at Harvard University
b)
gardening monk at a monestary
c)
lab researcher
d)
library clerk
16.
Mendel worked with ________ to understand heredity.
a)
pea plants
b)
dogs
c)
rats
d)
people
17.
If an organism is purebred, it means
a)
The organism has 2 of the same type of allele
b)
The organism has 2 different alleles
c)
The organism has no alleles
d)
The organism is related to Draco Malfoy
18.
Being tall is dominant for pea plants over being short. When Mendel cross pollinated a pure breeding tall plant with a pure breeding short plant, what were the results? (HINT: make a Punnett square to see results)
a)
all short plants
b)
all tall plants
c)
some tall and some short
d)
medium sized plants
19.
Homozygous means
a)
Two alleles(letters) for a trait that are the same
b)
Two alleles (letters) for a trait that are different
c)
No alleles for a trait
20.
A trait that overpowers or overshadows another trait is considered to be
a)
recessive
b)
hybrid
c)
uncommon
d)
dominant
21.
TT is
a)
Homozygous
b)
Heterozygous
c)
Hybrid
d)
common
22.
Hybrid means that an organism has
a)
two of the same type of allele for a trait
b)
two different alleles for a trait
c)
Two uppercase letters
d)
Two lowercase letters
23.
The physical appearance of a trait is known as that organism's
a)
genotype
b)
genes
c)
phenotype
d)
phenomes
24.
The passing of traits from parents to offspring is known as
a)
genetics
b)
allele
c)
gene
d)
heredity
25.
A portion of DNA that controls a trait is called a
a)
genetics
b)
gene
c)
heredity
d)
trait
26.
tt is a __________________ genotype.
a)
Hybrid
b)
homozygous recessive
c)
heterozygous
d)
homozygous dominant
27.
Tallness is dominant in pea plants. In order to be a tall pea plant, your genotype is
a)
tt
b)
TT or tt
c)
TT
d)
TT or Tt
100 %
