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WorksheetsBio: Genetics
Total questions: 48
Worksheet time: 40mins
Name
Class
Date
1.
Which of the following genotypes is homozygous recessive?
a)
RR
b)
Rr
c)
rr
d)
None of the Above
2.
Brown (B) is dominant over white (b). Which genotype is a purebred for brown fur?
a)
BB
b)
Bb
c)
bb
d)
All of the above
3.
Which of the following terms refers to the different possibilities of a gene?
a)
chromosome
b)
DNA
c)
Punnett Squares
d)
allele
4.
If something is heterozygous, it is also...
a)
purebred
b)
hybrid
c)
dominant
d)
recessive
5.
True/False: Different genotypes can code for the same phenotype.
a)
True
b)
False
6.
What does a Punnett Square help you do?
a)
Determine the ratio of phenotypes
b)
Determine the ratio of genotypes
c)
Predict possible traits the offspring will have
d)
All of the above
7.
A phenotype is the...
a)
letter combination
b)
dominant gene
c)
recessive gene
d)
physical appearance
8.
Which is the correct phenotype for this organism?
a)
BB
b)
blue
c)
green
d)
bb
9.
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
10.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
11.
Brown fur color is dominant over black fur color. Which of the following is the actual genotype of ALL of the offspring in the next generation of this cross for fur color?
AA x aa
AA x aa
a)
AA
b)
Aa
c)
aa
d)
brown fur
12.
A cross of a red cow with a white bull produces all roan offspring. This type of inheritance is known as
a)
codominance
b)
incomplete dominance
c)
multiple alleles
d)
"breed time:
13.
A person with type O blood marries a person with type AB blood. Possible blood genotypes of their children are
a)
IAi and IBIB
b)
IBIB and IAIA
c)
IAi and IBi
d)
IAIB and ii
14.
In certain rats, black fur is dominant over white fur. If two rats, both heterozygous for fur color are mated, their offspring would be expected to have
a)
four different genotypes and two different colors
b)
two different genotypes and three different colors
c)
three different genotypes and two different colors
d)
three different genotypes and three different colors
15.
the blending of two traits
a)
blending
b)
recessive trait
c)
incomplete dominance
d)
homozygous
16.
A red flowered plant (RR) is crossed with a white flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance. What percentage of the offspring will have pink (RW) flowers?
a)
0%
b)
25%
c)
50%
d)
100%
17.
This is an example of ___________?
a)
Incomplete dominance
b)
Co-Dominance
18.
when one allele is not completely dominant over the other - blending of two traits
a)
Codominance
b)
Complete dominance
c)
incomplete dominance
d)
none of these
19.
condition in which both alleles for a gene are expressed when present - both traits are visible
a)
Codominance
b)
Dominance
c)
Complete dominance
d)
Incomplete dominance
20.
this image is an example of
a)
codominance
b)
dominance
c)
incomplete dominance
21.
What percentage of the offspring will have this recessive disease?
a)
0%
b)
25%
c)
50%
d)
75%
22.
What percentage of the female offspring will be a carrier for this recessive disease?
a)
0%
b)
50%
c)
100%
d)
25%
23.
If a gene is found only on the X chromosome and not the Y chromosome, it is said to be what?
a)
sex-linked trait
b)
polygenic trait
c)
codominant trait
d)
incomplete dominance trait
24.
In fruit flies, eye color is a sex linked trait. Red is dominant to white. What would be the percentages of offspring of a cross of a white eyed female with a red-eyed male?
a)
1 female white eyes, 1 female red-eyes, 1 male white eyes, 1 male red-eyes
b)
2 female red eyes, 2 males white eyes
c)
2 female white eyes, 2 males red eyes
d)
2 female red eyes, 1 male red eyes, 1 male white eyes
25.
If a woman is a carrier for a sex linked recessive trait of hemophilia and her husband has hemophilia, which of the following is true? Make a punnett square!
a)
All sons will have hemophilia
b)
all daughters will have hemophilia
c)
50% of daughters and 50% of sons have hemophilia
d)
100% of sons have hemophilia and 100% of daughters are carriers
26.
Mike has type O blood. Mike can receive blood from someone who has Type A or Type B.
a)
True
b)
False
27.
Someone with type A blood can receive blood from someone who is type AB.
a)
True
b)
False
28.
What is NOT a possible genotype for someone with type B blood?
a)
BB
b)
AB
c)
BO
29.
What are the blood types of the possible children that a woman (type O) and man (type AB) can have?
a)
O and AB
b)
O and A
c)
O and B
d)
A and B
30.
A personal with type AB blood has which genotype?
a)
type A
b)
AA
c)
IAIA
d)
IAIB
31.
Which term(s) best describes the inheritance of human blood types?
a)
incomplete dominance and multiple alleles
b)
codominance and epistasis
c)
codominance and multiple alleles
d)
incomplete dominance and codominance
32.
What determines gender in humans?
a)
the X and Y chromosome
b)
chromosome 21
c)
codominance
d)
epistasis
33.
A man with type O blood is accused of being the father of a type B baby. The mother is type A. Could this man be the father?
a)
Yes
b)
No
34.
What blood type would an individual have if this was one of the cells seen under a microscope?
a)
Type A
b)
Type B
c)
Type AB
d)
Type O
35.
T - tall and t = short
In the punnett square below, what belongs in the missing square
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
36.
What ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness?
a)
0 in 4
b)
1 in 4
c)
2 in 4
d)
4 in 4
37.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond
38.
In the second generation-how many people are carriers of the trait?
a)
2
b)
3
c)
5
d)
6
39.
a)
Not Affected Male
b)
Not Affected Female
c)
Affected Male
d)
Affected Female
40.
Give the genotype for person III-3
a)
GG
b)
Gg
c)
gg
41.
Give the genotype for person II-1
a)
GG
b)
Gg
c)
gg
42.
What is self pollination?
a)
Pollen germinates the stigma of another plant
b)
Pollen germinates the stigma of the same plant
c)
Stigma germinated the pollen of the same plant
d)
None of the above
43.
When a parent reproduces alleles separate. The two factors (Tt) controlling a trait from the father will separate and same for the mother.
a)
Law of Codominance
b)
Law of Segregation
c)
Law of Independent Assortment
d)
Law of Dominance
44.
What law states that in Tt the person will only show the dominant allele
a)
law of segregation
b)
law of independent assortment
c)
law of dominance
d)
law of punnett squares
45.
Squidward has light blue skin, and his genotype for this trait is Bb. Which of the following would describe Squidward?
a)
Purebred
b)
Hybrid
c)
Homozygous
d)
Sex-linked
46.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
47.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
48.
If you have a parent who has GgBb as their genotype, what are the possible alleles they could donate to their gametes?
a)
GB, Gb, gB, gb
b)
GB, GB, gb, gb
c)
Gb, Gb, Gb, GB
d)
GG, BB, gg, bb
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