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WorksheetsGenetics
Total questions: 83
Worksheet time: 56mins
Name
Class
Date
1.
Different forms of genes:
a)
alleles
b)
phenotype
c)
genotype
d)
homologous chromosomes
2.
Genetics is:
a)
The study of heredity and genes
b)
how we pass traits to our kids
c)
The study of pea plants
d)
a class you take in college
3.
Mendel did his genetic studies on:
a)
purple flowers
b)
pea plants
c)
tall plants
d)
white flowers
4.
Mendel liked to use pea plants because he could:
a)
grow them during the winter
b)
decide what color they would be
c)
control how tall they grew
d)
control their pollination
5.
What happened when Mendel crossed a purple-flowered pea plant with a white-flowered pea plant in the first offspring?
a)
Half were purple, half were white
b)
All of them were white
c)
All of them were purple
d)
They were pink
6.
What were the results when the first offspring of purple flowers were crossed again?
a)
All of them were purple
b)
All of them were white
c)
75% white, 25% purple
d)
75% purple, 25% white
7.
In Mendel's flower experiment, what was Dominant?
a)
white flowers
b)
purple flowers
c)
pink flowers
d)
purple and white were dominant
8.
If one trait "covers" up another trait, the trait that covers the other is said to be:
a)
Dominant
b)
Heterozygous
c)
Recessive
d)
Hidden
9.
The Father of Genetics is:
a)
Mendel Gregor
b)
Howie Mendel
c)
George Mendel
d)
Gregor Mendel
10.
The trait is that is hidden is referred to as the ________ trait:
a)
hidden
b)
Dominant
c)
Recessive
d)
discreet
11.
Which of the following is NOT a trait you can inherit?
a)
your athletic ability
b)
your eye color
c)
your hairstyle
d)
your height
12.
An individual with XX chromosomes would be ____________.
a)
Male
b)
Female
13.
Which of the following statements is true regarding blood types?
a)
A and O are codominant, B is recessive.
b)
B and O are codominant, A is recessive.
c)
A and B are codominant, O is recessive.
d)
A , B and O are all codominant with each other.
14.
True or False: Men can NEVER be "carriers" for recessive sex-linked traits because they only have one X chromosome.
a)
True
b)
False
15.
A red lily crossed with a yellow lily produces heterozygous orange lily flowers. This is an example of which type of inheritance?
a)
Codominance
b)
Incomplete Dominance
c)
Sex Linked
d)
Polygenic Trait
16.
A yellow fish, when crossed with a blue fish, produces heterozygous fish with blue AND yellow scales. This is an example of which type of inheritance?
a)
Sex Linked
b)
Polygenic
c)
Codominance
d)
Incomplete Dominance
17.
If the heterozygous genotype leads to a BLEND of the other two traits, this is an example of ______________.
a)
Incomplete Dominance
b)
Codominance
c)
Multiple Alleles
d)
Polygenic Inheritance
18.
A heterozygous condition in which BOTH alleles are equally expressed is an example of _________________.
a)
Codominance
b)
Incomplete Dominance
c)
Polygenic Inheritance
d)
Multiple Alleles
19.
A red flowered plant (RR) breeds 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%
20.
What percentage of the female offspring will be a carrier for this recessive disease?
a)
0%
b)
50%
c)
100%
d)
25%
21.
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
22.
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
23.
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
24.
Hemophilia is a x-linked disorder. A woman is a carrier for the disorder. Which is the correct genotype?
a)
Hh
b)
XHXh
c)
hh
d)
XhXh
25.
Hemophilia is a x linked trait. A normal man marries a woman that is a carrier. What are their chances of having a child with the disorder?
a)
O%
b)
50%
c)
25%
d)
100%
26.
___________________________ is the study of how traits are passed on, or inherited.
a)
dominant traits
b)
ratio
c)
phenotype
d)
genetics
27.
_____________________ is the physical expression of a trait, or how it looks
a)
phenotype
b)
ratio
c)
recessive trait
d)
heredity
28.
A couple has two children, both of whom are girls. What is the likelihood that their 3rd child will be a girl?
a)
0%
b)
25%
c)
50%
d)
100%
29.
This is a part of the chromosome that carries information and controls a trait
a)
trait
b)
gene
c)
chromosome
d)
offspring
30.
One gene from a pair is called an
a)
Trait
b)
Allele
c)
Genotype
d)
Phenotype
31.
What would the phenotype be for the offsprings? T is dominant for tall pea plants
a)
50% tall, 50% short
b)
25% tall, 75% short
c)
100% tall, 0% short
d)
75% tall, 25% short
32.
In mussels, the allele for brown coloring (B) is dominant, and the allele for blue coloring(b) is recessive. For which parental genotypes are 100% of the offspring expected to be blue?
a)
BbxBb
b)
bbxbb
c)
BBxbb
d)
BBxBB
33.
In guinea pigs, the alleles for black hair(B) is dominant to the allele for brown hair(b). Two black-haired guinea pigs are crossed. One of the pigs is homozygous for black hair and one is heterozygous. What percentage of their offspring are expected to have black hair? Create a punnett square.
a)
25%
b)
50%
c)
75%
d)
100%
34.
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
35.
How many carrier females are in the third generation?
a)
4
b)
1
c)
2
d)
3
36.
If a Homozygous red snapdragon and a Heterozygous pink snapdragon were crossed - what percentage of the offspring would be homozygous white?
a)
0%
b)
25%
c)
50%
d)
75%
37.
What type of inheritance do two alleles have if their traits blend together?
a)
Incomplete Dominance
b)
Co-Dominance
c)
Mendelian Inheritance
d)
Homozygous Inheritance
38.
A red flowered plant (FRFR) breeds with a White flowered plant (FWFW). The gene for petal color in these plants expresses incomplete dominance. What percentage of the offspring will have pink flowers?
a)
0%
b)
25%
c)
50%
d)
100%
39.
This type of inheritance pattern shows BOTH traits in possible offspring
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
dominant pattern
40.
If a colorblind male marries a woman who is a carrier, what percentage of their FEMALE children will be colorblind?
a)
0%
b)
25%
c)
50%
d)
100%
41.
A woman with Type B blood (whose father had type O blood) has children with a man who has Type O blood.
What percentage of their children could be expected to have Type O blood?
What percentage of their children could be expected to have Type O blood?
a)
100%
b)
50%
c)
25%
d)
75%
42.
A dominant trait shows up __________.
a)
only when two dominant alleles are present
b)
only when one dominant allele is present
c)
when at least one recessive allele is present
d)
when at least one dominant allele is present
43.
A recessive trait only shows up when __________.
a)
two dominant alleles are present
b)
one dominant allele is present
c)
two recessive alleles are present
d)
at least one dominant allele is present
44.
If you cross two parents, both with genotype Bb, what percentage of children will have brown eyes?
a)
25%
b)
50%
c)
75%
d)
100%
45.
Purebred is another word for __________, while hybrid is another word for __________.
a)
dominant; recessive
b)
recessive; dominant
c)
homozygous; heterozygous
d)
heterozygous; homozygous
46.
Plant height is T = tall and t = short. Flower color is P = purple and p = white. Which genotype is NOT possible for a tall plant with purple flowers?
a)
TtPp
b)
TTPP
c)
TTPp
d)
ttpp
47.
A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?
a)
Incomplete Dominance
b)
Co dominance
c)
Independent assortment
d)
Recessive inheritance
48.
What type of inheritance do two alleles have if their traits blend together?
a)
Incomplete Dominance
b)
Co-Dominance
c)
Mendelian Inheritance
d)
Homozygous Inheritance
49.
What is NOT a possible genotype for someone with type B blood?
a)
BB
b)
AB
c)
BO
50.
What is the genotype of a person with type A blood, who had a father with type O blood?
a)
AB
b)
AO
c)
AA
d)
OO
51.
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
52.
which blood type is the universal donor (all people can receive it)?
a)
O
b)
AB
c)
A
d)
B
53.
Which blood type is he universal recipient (a person with this blood type can get blood from any other type)?
a)
O
b)
AB
c)
A
d)
B
54.
Individual hereditary factors assort independently during gamete production
a)
Law of segregation
b)
Law of independent assortment
c)
Low of dominance
55.
What is a factor that is covered up by another trait?
a)
Recessive
b)
Dominant
56.
What is the passing of traits from parents to offspring known as?
a)
Heredity
b)
Genetics
c)
Punnett Square
57.
What did Mendel do to make sure his plants didn't self-pollinate?
a)
Removed the anther/pollen.
b)
Added anthers to the plant
c)
Removed the stigma
d)
Cut the stems
58.
Which generation in Mendel's experiments showed a 3:1 ratio of traits?
a)
The second generation offspring
b)
The first generation offspring
c)
The original parents
d)
None of the above
59.
All offspring in this generation exhibit the dominant trait.
a)
The first parent plants
b)
The first generation offspring
c)
The second generation offspring
d)
Generation X
60.
During the production of gametes the two copies of each hereditary factor segregate so that offspring acquire one factor from each parent.
a)
law of independent assortment
b)
law of segregation
c)
law of genetic linkage
d)
law of inheritance
61.
Two similar chromosomes that you inherit from your parens
a)
sister chromatids
b)
homologous chromosomes
c)
sex chromosomes
d)
homozygous alleles
62.
Which of the following events is an important factor in increasing genetic diversity among sexually reproducing organisms
a)
crossing over
b)
testcross
c)
genetic linkage
d)
mitosis
63.
Recessive alleles may not be expressed because they are
a)
masked by the dominant allele
b)
the least common allele in the population
c)
the most common allele in the population
d)
less likely to having crossing over
64.
What was the key factor in the success in Mendel's experiments
a)
He started with plants that were native to the area
b)
He started with several different types of plants
c)
He started with self-pollinating purebred plants
d)
He started with cross-pollinating flowering plants
65.
An organism that has two different alleles for a trait.
a)
Purebred
b)
Hybrid
c)
Dominant
d)
Recessive
66.
An allele that ALWAYS shows up in the organism when it is present.
a)
Purebred
b)
Hybrid
c)
Dominant
d)
Recessive
67.
The Physical characteristics of an organism that we can observe or see.
a)
Alleles
b)
Genes
c)
Genotype
d)
Phenotype
68.
Mendel used this type of organism because they always produce offspring that have the same trait.
a)
Purebred
b)
Hybrid
c)
Heterozygous
d)
Heredity
69.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
70.
Which individual in the first generation is a carrier?
a)
The male
b)
The female
c)
individual 1
d)
None of the above
71.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
72.
How many boys did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
73.
How many girls did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
74.
In the second generation-how many people have the disease or display the physical trait?
a)
2
b)
4
c)
5
d)
6
75.
In the second generation-how many people are carriers of the trait?
a)
2
b)
3
c)
5
d)
6
76.
How many kids did individual one and two (from the second generation) have?
a)
2
b)
3
c)
4
d)
6
77.
How many people in this whole pedigree have the trait/disease?
a)
2
b)
3
c)
4
d)
6
78.
Looking at this pedigree, how many family members have the disease?
a)
4
b)
7
c)
All
d)
None
79.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
80.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
81.
What do half colored symbols represent?
a)
The individual is a carrier.
b)
The individual expresses the trait.
c)
The individual has both recessive alleles.
d)
The individual has both dominant alleles.
82.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond
83.
How many people in the pedigree are carriers for the disorder?
a)
6
b)
8
c)
2
d)
9
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