WorksheetsGenetics Review
Total questions: 25
Worksheet time: 38mins
Name
Class
Date
1.
Heterozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
2.
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
3.
Which of the following alleles is homozygous (purebred) recessive?
a)
Tt
b)
tt
c)
TT
d)
t
4.
In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?
a)
rr
b)
R
c)
RR
d)
RR or Rr
5.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
6.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
7.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
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.
W=white hair
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?
a)
none
b)
3/4
c)
1/2
d)
all
10.
The study of heredity and the variation of inherited characteristics
a)
gene
b)
genetics
c)
meiosis
d)
hybrid
11.
If a homozygous black cat (BB) is crossed with a homozygous white cat (bb), what is the probability of having a cat with white fur?
a)
100%
b)
0%
c)
75%
d)
25%
12.
What does a filled in square represent?
a)
Not affected Female
b)
Not affected Male
c)
Affected Male
d)
Affected Female
13.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
14.
What is this?
a)
Pedigree
b)
Karyotype
c)
Venn diagram
d)
Punnett Square
15.
Which individual in the first generation is a carrier?
a)
The male
b)
The female
c)
individual 1
d)
None of the above
16.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
17.
The exact pairing of the alleles such as BB, bb, or Bb are known as _________.
a)
Phenotypes
b)
Genotypes
c)
Proteins
d)
Genes
18.
If both copies of a gene have the same allele, the person is __________ for that trait.
a)
heterotrophic
b)
Recessive
c)
heterozygous
d)
homozygous
19.
An example of an heterozygous allele combination is
a)
Aa
b)
BB
c)
ff
d)
ZZ
20.
An example of a homozygous dominate allele combination is _____________.
a)
HH
b)
hh
c)
Hh
d)
zz
21.
In a heterozygous person often a _______ allele determines the phenotype
a)
recessive
b)
dominant
c)
hidden
d)
masked
22.
What does TT represent to geneticists?
a)
two recessive alleles
b)
two dominant alleles
c)
one recessive and one dominant allele
d)
none of the above
23.
What is the phenotype of a bird which the genotype Bb?
B-blue b-red
B-blue b-red
a)
blue
b)
red
24.
The passing of traits from parent to offspring are called
a)
genotype
b)
heredity
c)
characteristics
d)
mutation
25.
A trait that can be learned or changed depending on an organism's interaction with its environment.
a)
acquired
b)
inherited
100 %
