WorksheetsHeredity
Total questions: 31
Worksheet time: 1hrs 22mins
Name
Class
Date
1.
Alternative forms of a gene are called
a)
Alleles
b)
Homozygous
c)
DNA
d)
Genetics
2.
This trait will always be expressed if present because it will mask the expression of others
a)
stem cells
b)
heterozygous
c)
dominant
d)
recessive
3.
Hair colour is an example of
a)
genotype
b)
phenotype
4.
Being a carrier of a genetic disorder is an example of
a)
genotype
b)
phenotype
5.
The genotype of: bb will have the PHENOTYPE of...
a)
black fur
b)
white fur
c)
course hair
d)
fine hair
6.
The genotype of: AA will have the PHENOTYPE of...
a)
albinism
b)
normal pigment
c)
albino carrier
7.
The genotype of: albino carrier will have the alleles of...
a)
Aa
b)
AA
c)
aa
8.
Which of the following is homozygous dominant?
a)
Yy
b)
Y
c)
yy
d)
YY
9.
Which of the following is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
10.
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
11.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both
12.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond
13.
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
14.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
15.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
16.
This image shows a...
a)
Punnett Square
b)
Phenotype
c)
Genotype
d)
Dominant allele
17.
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
18.
What contain genetic information that controls traits?
a)
ribosomes
b)
chromosomes
c)
centrioles
d)
spindles
19.
The two alleles that control the phenotype of a trait are called the trait's
a)
chromotype
b)
allelotype
c)
genotype
d)
heterotype
20.
What goes in the top right square?
a)
BB
b)
Bb
c)
bb
21.
What is the ratio of purple to white flowers?
a)
1:1
b)
1:3
c)
2:2
d)
3:1
22.
the study of heredity
a)
Botany
b)
Astronomy
c)
Genetics
d)
Ecology
23.
Look at the picture. The probability that a child will inherit the recessive trait is
a)
25%
b)
50%
c)
75%
d)
100%
24.
How many individuals are there in the 3rd generation?
a)
2
b)
3
c)
4
d)
6
25.
Why does individual IV-7 have colorblindness?
a)
Because his mom is a carrier.
b)
Because his dad has it.
c)
Because his siblings have it.
d)
Because his uncle has it.
26.
Gregor Mendel developed some basic principles of heredity by
a)
crossing pea plants
b)
breeding fruit flies
c)
cutting off the tails of mice
d)
growing bacteria in a laboratory
27.
What do half colored symbols represent?
a)
The individual is a carrier (heterozygous).
b)
The individual expresses the trait.
c)
The individual has both recessive alleles.
d)
The individual has both dominant alleles.
28.
What do we use pedigrees for?
a)
To look at families
b)
To make determinations about the offspring
c)
To track traits in families
d)
Nothing
29.
Which of the following combinations of sex chromosomes represent a female?
a)
XY
b)
XXY
c)
XX
30.
A corn plant heterozygous for tall sprouts mates with a corn plant with short sprouts. If tall sprouts are dominant, how many different phenotypes are possible in the offspring?
a)
1
b)
2
c)
3
d)
4
31.
Which process and type of resulting cells are represented?
a)
mitosis, gametes
b)
mitosis, body cells
c)
meiosis, gametes
d)
meiosis, body cells
100 %
