WorksheetsIntro to Genetics
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
In bluebirds, light blue feathers are dominant over dark blue feathers. What is the allele code for the color trait in bluebirds?
a)
b
b)
l
c)
d
d)
f
2.
In bluebirds, light blue feathers are dominant over dark blue. What is the dominant phenotype?
a)
Light blue
b)
Dark blue
c)
LL
d)
Ll
3.
In bluebirds, light blue feathers are dominant over dark blue. What is the recessive phenotype?
a)
Light blue
b)
Dark blue
c)
Ll
d)
ll
4.
In bluebirds, light blue feathers are dominant over dark blue. What is the genotype of a bluebird that is homozygous (purebred) dominant?
a)
Light blue
b)
Dark blue
c)
LL
d)
ll
5.
In bluebirds, light blue feathers are dominant over dark blue. What is the genotype of a bluebird that is homozygous (purebred) recessive?
a)
Light blue
b)
Dark blue
c)
LL
d)
ll
6.
In bluebirds, light blue feathers are dominant over dark blue. What is the genotype of a bluebird that is heterozygous for feather color?
a)
Light blue
b)
Dark blue
c)
Medium blue
d)
Ll
7.
In bluebirds, light blue feathers are dominant over dark blue. What is the phenotype of a bluebird that is heterozygous for feather color?
a)
Light blue
b)
Dark blue
c)
Medium blue
d)
Ll
8.
In bluebirds, light blue feathers are dominant over dark blue. A homozygous (purebred) dominant bluebird mates with a homozygous (purebred) recessive bluebird. What will the offspring phenotype(s) be?
a)
100% heterozygous
b)
100% Ll
c)
50% Light Blue/ 50% Dark Blue
d)
100% Light Blue
9.
In bluebirds, light blue feathers are dominant over dark blue. A homozygous (purebred) dominant bluebird mates with a homozygous (purebred) recessive bluebird. What will the offspring genotype(s) be?
a)
100% heterozygous
b)
100% Ll
c)
50% LL/ 50% ll
d)
100% Light Blue
10.
In bluebirds, light blue feathers are dominant over dark blue. How can 2 heterozygous bluebirds mate and produce a dark blue bluebird?
a)
Both parents are hybrid.
b)
Dark bluebird has a mutation.
c)
One parent is homozygous recessive.
d)
Offspring will change color as it gets older.
11.
In bluebirds, light blue feathers are dominant over dark blue. Can two light blue birds mate and produce a dark blue bird?
a)
Yes
b)
No
12.
Who is the father of genetics?
a)
Gregor Mendel
b)
Charles Darwin
c)
Albert Einstein
d)
George Washington
13.
In a hybrid cross, what is the phenotype ratio (dominant to recessive/ D:R)?
a)
3:1
b)
4:0
c)
2:2
d)
1:2:1
14.
In a hybrid cross, what is the phenotype ratio (dominant to recessive/ D:R)?
a)
3:1
b)
4:0
c)
2:2
d)
1:2:1
15.
In a hybrid cross, what are the chances of producing an offspring with the recessive phenotype?
a)
25%
b)
50%
c)
75%
d)
100%
16.
In a hybrid cross, what is the genotype ratio (#XX: #Xx: #xx)?
a)
1:2:1
b)
2:1:1
c)
3:1
d)
1:3
17.
In a hybrid cross, what is the probability of producing an offspring with a homozygous dominant genotype?
a)
25%
b)
50%
c)
75%
d)
100%
18.
In a hybrid cross, what is the probability of producing an offspring with the dominant phenotype?
a)
25%
b)
50%
c)
75%
d)
100%
19.
In Mendel's experiment, what was the genotype for the tall parent in the PARENT generation?
a)
TT
b)
Tt
c)
tt
d)
Tall
20.
In Mendel's experiment, what was the genotype for height in the FIRST generation?
a)
TT
b)
Tt
c)
tt
d)
Tall
100 %
