NEW
Font size
S
M
L
XL
WorksheetsGenetics Review
Total questions: 40
Worksheet time: 28mins
Name
Class
Date
1.
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
2.
Magda is a tall, 11 year old drummer. She has a scar on her right cheek. She is good at swimming. Which of her traits did Magda most likely inherit?
a)
height
b)
the scar
c)
ability to swim
d)
ability to play drums
3.
Which of the following will only show if two alleles are present?
a)
a dominant trait
b)
a recessive trait
4.
Which of the following genotypes would be considered heterozygous?
a)
BB
b)
gg
c)
Ff
d)
TT
5.
Which of the following is a phenotype?
a)
Bb
b)
Black fur
6.
What is the percentage of offspring that have green pods?
a)
100%
b)
75%
c)
50%
d)
25%
7.
What is the phenotype of the heterozygous parent in the punnett square?
a)
green
b)
yellow
c)
hybrid
d)
purebred
8.
In this punnett square, which is the dominant trait?
The B stands for bud.
The B stands for bud.
a)
purple flower bud
b)
white flower bud
c)
dominant
d)
recessive
9.
Which of the following genotypes is a purebred?
a)
Bb
b)
Gg
c)
bb
d)
Dd
10.
A phenotype is the...
a)
letter combination
b)
dominant gene
c)
recessive gene
d)
physical appearance
11.
The traits of an organism are passed to its offspring on small coded strands of DNA material called
a)
meiosis
b)
recessive traits
c)
genes
d)
heredity
12.
Which sentence is FALSE?
a)
All organisms have 23 pairs of DNA.
b)
Chromosomes are made of genes.
c)
DNA is made out of 4 chemicals: adenine, cytosine, thymine, guanine
d)
DNA is the recipe for life.
13.
True or False? The passing of traits from one parent to offspring is heredity.
a)
False
b)
True
14.
True or False? Being in control is known as dominance.
a)
True
b)
False
15.
HOMOZYGOUS
a)
same
b)
different
16.
HETEROZYGOUS
a)
same
b)
different
17.
traits that show up more often
a)
dominant
b)
recessive
18.
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%
19.
An allele is a ____________.
a)
type of gene
b)
type of computer
c)
type of jeans
d)
certified doctor of biology
20.
A capital letter (T) represents a ___________ allele.
a)
Dominant
b)
Recessive
c)
Neutral
21.
In order for a recessive trait to be shown, an organism must contain _________ .
a)
2 recessive alleles
b)
2 dominant alleles
c)
2 neutral alleles
d)
1 dominant + 1 recessive allele
22.
Why may you look like your relatives?
a)
Because you have the same exact genes
b)
because you share similar genes
c)
because you're identical clones
d)
because you're all aliens
23.
What do genes have to do with traits?
a)
genes code for specific traits
b)
traits code for specific genes
c)
traits and genes are the same thing
d)
traits have nothing to do with genes
24.
A organism with the gene code "Tt" is considered___________.
a)
Heterozygous
b)
Homozygous
25.
Deoxyribonucleic Acid is better known as ________
a)
DNA
b)
Chromosome
c)
Alleles
d)
Phenotype
26.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
27.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
28.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
29.
What is the phenotype of the offspring? (A-Brown hair; a-blond hair)
a)
50 % Brown Hair and 50% Blond Hair
b)
25 % Brown Hair and 75% Blond Hair
c)
75 % Brown Hair and 25% Blond Hair
d)
0% Brown Hair and 100% Blond Hair
30.
If you have a male with large wings (DD) and a female with small wings (dd). What allele stands for large wings?
a)
D
b)
d
c)
Dd
d)
dd
31.
A green pea plant (GG) is being crossed with a green pea plant (Gg). What is the phenotype?
a)
100 % rainbow
b)
50% yellow and 50% green
c)
100% green
d)
100% yellow
32.
A homozygous dominant brown mouse is crossed with a heterozygous brown mouse (tan is the recessive color).
a)
100 % tan
b)
100 % brown
c)
50 % brown and 50% tan
d)
75 % brown and 25 % tan
33.
How many alleles (letters) does a child get from each parent for each trait?
a)
1
b)
2
c)
3
d)
4
34.
What gender has an X and a Y chromosome?
a)
male
b)
female
35.
Which of the following is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
36.
Which of the following is homozygous dominant?
a)
Yy
b)
Y
c)
yy
d)
YY
37.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
38.
Aa is
a)
homozygous
b)
heterozygous
39.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
40.
Which of the characteristics is a lion least likely to pass on to its offspring?
a)
fur color
b)
length of tail
c)
scars on leg
d)
body size
Reset
