WorksheetsGenetics quiz
Total questions: 12
Worksheet time: 6mins
Name
Class
Date
1.
Dihybrid crosses examine ____ trait(s) at a time.
a)
one
b)
two
c)
multiple
d)
no
2.
A ____ is the genes you have for a trait, while the ____ is the physical result of those genes.
a)
phenotype, genotype
b)
genotype, phenotype
c)
monohybrid, dihybrid
d)
genetics, health
3.
When the heterozygous condition results in the organism having blended traits ( like red and white make pink), we call that _____.
a)
codominance
b)
incomplete dominance
c)
dihybrid
d)
monohybrid
4.
When the heterozygous condition results in the organism having both traits equally expressed ( like black and white genes give a speckled chicken), we call that ____.
a)
codominance
b)
incomplete dominance
c)
dihybrid
d)
monohybrid
5.
Codominance and incomplete dominance are examples of exceptions to Mendel's rules.
a)
true
b)
False
6.
Codominance. Cross a homozygous black chicken (B) with a homozygous white chicken (W). Give the phenotype.
a)
100% black chickens
b)
100% white chickens
c)
100% speckled (both black and white)
d)
50% speckled and 50% white chickens
7.
Incomplete dominance. Cross two pink flowered (RW) plants. What is the phenotype of the offspring?
a)
1/4 red, 2/4 pink, 1/4 white
b)
2/4 red, 2/4 white
c)
100% red
d)
2/4 pink, 2/4 white
8.
Human blood typing is an example of a codominant trait.
a)
true
b)
False
9.
Dihybrid problem
R= round r =wrinkled P = purple p = white
A heterozygous round seed and heterozygous purple flowered plant is crossed with a homozygous round and homozygous purple plant.
What are the phenotypes that result from this?
a)
100% round and purple
b)
50% round and purple , 50% wrinkled and white
c)
¼ round and purple, ¼ round and white, ¼ wrinkled and purple, 1/4 wrinkled and white
10.
Dihybrid problem
R= round r = wrinkled P = purple p = white
A homozygous round seed plant with homozygous purple flowers is crossed with a homozygous wrinkled seed plant with white flowers.
What is the genotype that results?
a)
¼ RrPp, ¼ Rrpp,¼ rrPp, ¼ rrpp
b)
100% RrPp
c)
¼ RRPP, ¼ RRPp, ¼ RrPP, ¼ RrPp
11.
Complete a Punnett square to solve the following. A heterozyous type A bloodtype is crossed with a heterozygous type B bloodtype.
Could you get all four phenotypes of blood types with this cross?
a)
yes
b)
No
12.
Cross an AB blood type with a type O. Complete a Punnett square to solve this.
What are the genotypes that result?
a)
1/4 or 25%AA, 2/4 or 50% BB, 1/4 or 25% OO
b)
2/4 or 50% AO, 2/4 or 50% BO
c)
1/4 or 25% of each AB, BO, AO, OO
100 %
