WorksheetsGenetics Quiz Review
Total questions: 20
Worksheet time: 45mins
Name
Class
Date
1.
Having two of the same genes for the trait (TT, tt); Both dominant or both recessive.
a)
homozygous or purebred
b)
heterozygous or hybrid
c)
twin offspring
d)
pairs of chromosomes
2.
What characteristic would a child NOT inherit from parents?
a)
freckles
b)
eye color
c)
hair style
d)
dimples
3.
Which of the following alleles is homozygous (purebred) recessive?
a)
Tt
b)
tt
c)
TT
d)
t
4.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed? Brown is dominate.
a)
0 %
b)
25%
c)
50%
d)
75%
5.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
6.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous genes
d)
mutated DNA
7.
Aa is
a)
homozygous (purebred)
b)
heterozygous (hybrid)
8.
B=brown eyes
b= blue eyes
What is true about these two brothers that have brown eyes:
One has genotype BB the other Bb.
b= blue eyes
What is true about these 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
9.
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%
10.
Evan is a tall, 12 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
11.
Which of the following best describes a DNA molecule?
a)
double helix
b)
not present in plants
c)
found in non-living things
d)
DNA is an element on the periodic table
12.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both
13.
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
14.
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)
medium sized
d)
neither tall or short
15.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
16.
What is the cause of some traits "skipping" a generation?
a)
dominant traits
b)
recessive traits
c)
mutations
d)
natural selection
17.
The scientific study of heredity is ____.
a)
Genetics
b)
Punnett squares
c)
Inheritance
d)
Biology
18.
If one stronger trait "covers" up another weaker trait, the trait that covers the other is said to be:
a)
Dominant
b)
Heterozygous
c)
Recessive
d)
Hidden
19.
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
20.
Some traits are inherited, some traits are acquired over time.
tongue rolling is
tongue rolling is
a)
inherited trait
b)
acquired trait
100 %
