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WorksheetsXII BIO CH 5 GENETICS
Total questions: 25
Worksheet time: 19mins
Name
Class
Date
1.
The different forms of a trait are called
a)
alleles
b)
genes
c)
chromosomes
d)
traits
2.
A section on a chromosome that contains the code for a particular trait.
a)
allele
b)
gene
c)
DNA
d)
stripe
3.
A fertilized egg.
a)
sperm
b)
egg
egg
egg
c)
zygote
d)
ovule
4.
When two alleles are different in a genotype they are called
a)
homozygous
b)
heterozygous
c)
purebred
d)
mutated
5.
When two alleles are the same in a genotype it is called
a)
homozygous
b)
heterozygous
c)
hybrid
d)
dominant
6.
How a trait is expressed (looks) is its
a)
genotype
b)
phenotype
c)
allele
d)
gene
7.
The particular alleles inherited for a trait are called its
a)
genotype
b)
phenotype
c)
dominant
d)
recessive
8.
A genetic factor that blocks another genetic factor.
a)
dominant trait
b)
recessive trait
c)
homozygous recessive trait
d)
phenotype
9.
A genetic factor that is blocked by the presence of a dominant factor.
a)
dominant trait
b)
recessive trait
c)
heterozygous trait
d)
gene
10.
If your genotype is homozygous dominant, your alleles would be written as
a)
AA
b)
Aa
c)
aa
11.
If your genotype is heterozygous, your alleles would be written as
a)
AA
b)
Aa
c)
aa
12.
If your genotype is homozygous recessive, your alleles would be written as
a)
AA
b)
Aa
c)
aa
13.
AA is
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
14.
aa is
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
15.
Aa is
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
16.
AA can also be called
a)
purebred dominant
b)
purebred recessive
c)
hybrid
17.
aa can also be called
a)
purebred dominant
b)
purebred recessive
c)
hybrid
18.
Aa can also be called
a)
purebred dominant
b)
purebred recessive
c)
hybrid
19.
Alleles come into a zygote on the
a)
egg and sperm cells
b)
body cells
c)
diploid cells
20.
Who is considered the Father of Genetics?
a)
Charles Darwin
b)
Anton Von Leewenhoek
c)
Gregor Mendel
d)
Bill Nye
21.
If you cross a homozygous dominant purple flowered pea plant with a homozygous recessive white flowered pea plant, what % of the offspring will have white flowers?
a)
0%
b)
50%
c)
75%
d)
100%
22.
If you cross a homozygous dominant orange tiger with a heterozygous orange tiger, what % of the tiger cubs could be white, the recessive form of the trait?
a)
0%
b)
25%
c)
75%
d)
100%
23.
If you cross two heterozygous guinea pigs that both have rough fur, what are your chances of having a guinea pig with smooth fur, the recessive form of the trait.
a)
0%
b)
25%
c)
75%
d)
100%
24.
If you cross AA x aa, what % of the offspring will be purebred?
a)
0%
b)
50%
c)
100%
25.
If you cross Aa x Aa, what % of the offspring will show the dominant form of the trait?
a)
0%
b)
25%
c)
50%
d)
75%
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