WorksheetsGenetics Quiz
Total questions: 39
Worksheet time: 2hrs 57mins
Name
Class
Date
1.
What is a phenotype?
a)
The expression of a trait; what you see.
b)
refers to the genetic makeup of an individual
c)
An organism that has the same genes for a trait (ex. TT or tt)
d)
the passing of traits from parent to offspring
2.
What does heterozygous mean?
a)
An organism that has the same genes for a trait (TT or tt)
b)
An organism that has different genes for a trait (Tt)
c)
When neither gene is fully dominant; offspring is a mixture of both
d)
the different forms of a trait (hair color--> brown, blonde, red
3.
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
4.
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
5.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
6.
Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.
a)
DNA
b)
protein
c)
RNA
d)
glucose nucleic acid (GNA)
7.
What characteristic would a child not inherit from parents?
a)
freckles
b)
eye color
c)
hair style
d)
dimples
8.
A human usually has _____ total chromosomes.
a)
6
b)
22
c)
4
d)
46
9.
Which of the following alleles is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
10.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
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.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
13.
AA and Aa always show up as
a)
dominant
b)
recessive
14.
aa always shows up as
a)
dominant
b)
recessive
15.
Aa is
a)
homozygous
b)
heterozygous
16.
The nitrogen base guanine is always paired up with the nitrogen base ________________.
a)
thymine
b)
guanine
c)
cytosine
d)
adenine
17.
The nitrogen base adenine is always paired with the nitrogen base ____________.
a)
cytosine
b)
guanine
c)
thymine
d)
nitrogen
18.
one set of instructions for an inherited trait
a)
heredity
b)
allele
c)
trait
d)
gene
19.
B=brown eyes
b= blue eyes
What is true about two brothers that have brown eyes?
One has genotype BB the other Bb.
b= blue eyes
What is true about two brothers that have brown eyes?
One has genotype BB the other Bb.
a)
they have same phenotype and genotype
b)
they have different genotypes and phenotypes
c)
they have same phenotype but different genotypes
d)
they have same genotype but different phenotypes
20.
A dog gives birth to 5 puppies. What percentage of the chromosomes does each puppy share with the mother?
a)
25%
b)
50%
c)
75%
d)
100%
21.
Mark is a tall, 11 year old boy. He has a scar on his right cheek. He is intelligent and an excellent drummer. Which of his traits did he most likely inherit?
a)
height
b)
the scar
c)
his intelligence
d)
ability to play drums
22.
Which is NOT required to make proteins
a)
DNA
b)
RNA
c)
Ribosomes
d)
lysosomes
23.
Where is DNA in a eukaryotic cell?
a)
Cytoplasm
b)
Cell membrane
c)
Nucleus
d)
Golgi
24.
The two process that make up protein synthesis are
a)
DNA replication and translation
b)
DNA replication and transcription
c)
transcription and translation
d)
none of the above
25.
Where does the process of translation happen?
a)
nucleus
b)
ribosomes
c)
cytoplasm
d)
smooth endoplasmic reticulum
26.
What brings the amino acids to the ribosomes?
a)
DNA
b)
mRNA
c)
tRNA
d)
little mini semi trucks that drive around your cells
27.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
28.
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
29.
DNA codes for...
a)
cholesterol
b)
proteins
c)
fatty acids
d)
a sandwich
30.
DNA sequence is ACAGTGC. How would this be coded on mRNA?
a)
TGTCACG
b)
UGUCACG
c)
GUGACAU
d)
CACUGUA
31.
Genetic info flows in one direction. Which best represents this flow?
a)
DNA-protein-RNA
b)
Protein-RNA-DNA
c)
RNA-protein-DNA
d)
DNA-RNA-protein
32.
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%
33.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both
34.
G = green, g = yellow
The genotype for a yellow plant is...
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
all of the choices result in yellow
35.
T = tall an t = short
TT and Tt would result in the following phenotype
TT and Tt would result in the following phenotype
a)
short
b)
tall
c)
both tall and short
d)
neither tall or short
36.
T - tall and t = short
In the punnett square below, what belongs in the missing square
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
37.
B = brown fur b = white fur
In the punnett square, what is the probability for white fur?
In the punnett square, what is the probability for white fur?
a)
0%
b)
25%
c)
50%
d)
75%
38.
In the punnett square shown, what must the genotype of the missing parent be?
a)
BB
b)
Bb
c)
bb
d)
Tt
39.
In a DNA molecule, if there are 5 adenines, thre should be _______________ thymines.
a)
10
b)
5
c)
2.5
d)
cannot tell
100 %
