WorksheetsGenetics Review
Total questions: 48
Worksheet time: 35mins
Name
Class
Date
1.
What is Gregor Mendel known as?
a)
Father of Genetics
b)
Father of Biology
c)
Father of Evolution
d)
Father of Botany
2.
What type of plants did Mendel use for his experiments?
a)
Corn
b)
Pea plants
c)
Beans
d)
Flowers
3.
If a plant has the genotype 'HH', what is it?
a)
Heterozygous
b)
Homozygous dominant
c)
Homozygous recessive
d)
Hybrid
4.
What is the physical expression of a trait called? What it looks like.
a)
Genotype
b)
Phenotype
c)
Allele
d)
Trait
5.
What does a Punnett square help to determine?
a)
The age of plants
b)
Possible offspring genotypes and phenotypes
c)
The height of plants
d)
The color of flowers
6.
What is the genotype of a plant that is heterozygous for height?
a)
HH
b)
hh
c)
Hh
d)
H
7.
If a male rat has the genotype 'Aa' and a female has 'aa', what is the probability of producing an offspring with the genotype 'aa'?
a)
0%
b)
25%
c)
50%
d)
75%
8.
Brown eyes are dominant to blue eyes. What is the probability of having a child with blue eyes (bb) if both parents are heterozygous (Bb)?
a)
0%
b)
25%
c)
50%
d)
75%
9.
What does it mean if an organism is homozygous recessive?
a)
It has two dominant alleles
b)
It has two recessive alleles
c)
It has one of each allele
d)
It shows the dominant trait
10.
What is the genotype of a female rat that is homozygous dominant for fur color?
a)
AA
b)
Aa
c)
aa
d)
A
11.
What does the term 'homozygous' refer to?
a)
Having two different alleles
b)
Having two identical alleles
c)
Having one dominant allele
d)
Having one recessive allele
12.
What type of inheritance is shown when red and white snapdragons produce pink offspring?
a)
Dominant-recessive
b)
Codominance
c)
Incomplete dominance
d)
Polygenic inheritance
13.
What is an example of codominance?
a)
A blue chicken from a black and white chicken
b)
A child with wavy hair from straight and curly parents
c)
A red flower and a white flower producing pink flowers
d)
A white and peach flower producing a flower with both (white and peach) colors
14.
Which blood type is an example of codominance?
a)
Type A
b)
Type B
c)
Type AB
d)
Type O
15.
What is polygenic inheritance?
a)
Inheritance of traits from one gene
b)
Inheritance of traits from multiple genes
c)
Inheritance that only follows dominant traits
d)
Inheritance that only follows recessive traits
16.
In the Punnett square for blood types, which genotype results in Type O blood?
a)
AB
b)
AO
c)
BO
d)
OO
17.
What is the significance of the alleles A and B in blood type inheritance? (Choose all that apply)
a)
They are both recessive
b)
They are codominant
c)
They are both dominant
d)
They are not involved
18.
What is the genotype for a male
a)
XX
b)
XY
c)
X
d)
Y
19.
What is the ratio of phenotypes when two pink snapdragons are crossed?
a)
1:2:1
b)
3:1
c)
9:3:3:1
d)
1:1
20.
What are the genotypes of the offspring when a carrier of sickle cell trait (NS) marries an unaffected person (NN)?
a)
NN, NS
b)
SS, NS
c)
NN, NS, SS
d)
SS
21.
What does the term 'codominance' mean in the context of genetics?
a)
One allele is completely dominant over another
b)
Both alleles are expressed equally
c)
Neither allele is expressed
d)
Only one allele is expressed
22.
What is the main difference between incomplete dominance and codominance?
a)
Incomplete dominance shows blending, codominance shows both traits
b)
Both show blending
c)
Both show equal expression
d)
There is no difference
23.
What does the term 'heterozygous' mean?
a)
Having two identical alleles
b)
Having two different alleles
c)
Having one dominant allele
d)
Having one recessive allele
24.
Who do you inherit your traits from
a)
Mom only
b)
Dad only
c)
Mom and dad
d)
Great Grandmother
25.
A wealthy elderly couple die together in an accident. Soon a man shows up to claim their fortune, saying that he is their only son who ran away from home as a boy. Other relatives dispute his claim. Hospital records show the blood types of the deceased couple are AB and O. The man claiming to be their son has type O blood. Could this be their son?
a)
Yes
b)
no
26.
What is the universal donor
a)
Type A
b)
Type B
c)
Type AB
d)
Type O
27.
In rabbits, black fur (B) is dominant over brown fur (b). If a rabbit has brown fur, what can you conclude about its genotype?
a)
It is BB.
b)
It is Bb
c)
It is brown
d)
It is bb.
28.
What is the phenotype in the bottom right square? (Yellow is dominant and green is recessive)
a)
yy
b)
Yy
c)
yellow
d)
green
29.
What is the yellow seed genotype?
a)
aa
b)
Aa
c)
AA
d)
AA or Aa
30.
Mendel's law of segregation states that during meiosis, the alleles that control each trait separate, and only _________________ from each pair is/are passed to the offspring
a)
one allele
b)
the dominant trait
c)
two alleles
d)
the recessive trait
31.
A tall plant (TT) is crossed with a tall plant (Tt). What is the phenotype of the offspring?
a)
50% homozygous dominant; 50% heterozygous; 100% tall
b)
100% homozygous dominant; 100% tall
c)
25% homozygous dominant; 75% heterozygous; 100% short
d)
50% homozygous dominant; 50% heterozygous; 100% short
32.
If polydactyly (born with extra toes/fingers) is a dominant trait in cats, then which of the following genotype(s) would produce a cat with extra toes? (Select all that apply.)
a)
TT
b)
Tt
c)
tt
33.
If a trait is recessive, it needs to be inherited from ___ parents to be 'expressed'.
a)
one
b)
both
34.
What is the genotypic ratio of the offspring?
a)
3:1
b)
1:3
c)
1:2:1
d)
2:2
35.
The dominant trait is
a)
yellow pea seeds
b)
green pea seeds
c)
there is no dominant seed
d)
Jolly green giant
36.
In cacti, long arms (A) are dominant to short arms (a). Suppose 2 heterozygous cacti are crossed. What percentage of their offspring are expected to have short arms?
a)
0%
b)
25%
c)
75%
d)
100%
37.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
38.
What is the genotype for this organism?
(E= 3 eyes, e= 1 eye)
(E= 3 eyes, e= 1 eye)
a)
EE
b)
Ee
c)
ee
d)
EE or Ee
39.
Homozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
40.
This is an example of a ______________.
a)
phenotype
b)
genotype
c)
xenotype
d)
base pairs
41.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
42.
What goes in box 3
a)
Aabb
b)
AABB
c)
AAbb
d)
aaBb
43.
What goes in box 15
a)
aabb
b)
AABB
c)
aaBB
d)
AAbb
44.
How are alleles inherited?
a)
From the mother only
b)
From the father only
c)
From both parents
d)
Randomly from the environment
45.
What is an allele?
a)
A type of gene
b)
A variant form of a gene
c)
A type of chromosome
d)
A mutation in a gene
46.
This flower would be an example of which inheritance pattern?
a)
polygenic traits
b)
incomplete dominance
c)
multiple alleles
d)
codominance
47.
Genetic traits are passed from ________ to ________.
a)
parent; offspring
b)
chromosomes; traits
c)
DNA; genes
d)
offspring; parents
48.
Jumping spider cells contain 22 chromosomes. What percentage of the genetic material do jumping spiders obtain from their mothers?
a)
50%
b)
25%
c)
75%
d)
100%
100 %
