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WorksheetsGenetics
Total questions: 51
Worksheet time: 1hrs 11mins
Name
Class
Date
1.
What is a phenotype
a)
The traits in the punnet square
b)
The traits you physically see
c)
A type of animal
d)
The
2.
RR
a)
homozygous
b)
heterozygous
3.
Pp
a)
Homozygous
b)
Heterozygous
4.
OO
a)
homozygous
b)
heterozygous
5.
Zz
a)
homozygous
b)
heterozygous
6.
Yellow is dominant to white. What is the phenotype of this organism?
Yy
Yy
a)
Yellow
b)
white
7.
Yellow is dominant to white, what is the phenotype of this organism?
YY
YY
a)
Yellow
b)
white
8.
Tall is dominant to short. What is the phenotype of this organism?
Tt
Tt
a)
tall
b)
short
9.
What is genetics?
a)
The study of DNA nucleotides
b)
The study of heredity
c)
The study of a cell dividing into 2
d)
The study of eye color
10.
What is heredity?
a)
How different genes and traits are passed down from parents to children
b)
How different genes and traits are passed down from children to parents
c)
How traits are identical to parents
d)
How traits are different between siblings
11.
What is a gene?
a)
An entire chromosome that codes for a trait
b)
a piece of clothing
c)
a piece of a DNA on chromosome that codes for a trait
d)
Chemical messengers in your brain that code for a trait
12.
What is a genotype?
a)
The genetic make up (code)
b)
The physical trait
13.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
14.
What is a dominant allele?
a)
A trait that is always shown (capital letter)
b)
A trait that can be hidden (lower case letter)
c)
Alleles that are the same
d)
Alleles that are different
15.
What is a recessive allele?
a)
A trait that is always shown (capital letter)
b)
A trait that can be hidden (lower case letter)
c)
Alleles that are the same
d)
Alleles that are different
16.
Dominant or recessive?
tt
tt
a)
Dominant
b)
Recessive
17.
Jackie is homozygous recessive for having dimples (D). What is her genotype?
a)
pp
b)
Dd
c)
dd
d)
DD
18.
Jackie is homozygous recessive for having dimples (D). What is her genotype?
a)
pp
b)
Dd
c)
dd
d)
DD
19.
Which of the following pairs is homozygous dominant?
a)
Hh
b)
pp
c)
HH
d)
aa
20.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
21.
True or false?
Heterozygous recessive traits have two identical allels expressed as lowercase
Heterozygous recessive traits have two identical allels expressed as lowercase
a)
True
b)
False
22.
Which of the following are true of sexual reproduction?
a)
two parents
b)
half of genes comes from each parent
c)
increases diversity of the species
d)
all the above
23.
All of the followings are true of asexual reproduction, except for which one?
a)
offspring are identical to parent (clones)
b)
lots of diversity created in the species
c)
one parent
d)
low genetic variation in offspring
24.
If Patrick is a purebred for tall head (which is dominant over short head), and marries Patty, who has a short head, then their children would have the genotype of...
a)
TT
b)
tt
c)
Tt
25.
When Mendel studied pea plants, he discovered that the trait for tall pea plants was dominant over short plants. That means that if a pea plant was heterozygous for tall-short trait (Tt), the plant would be...
a)
short
b)
medium
c)
tall
d)
stubby
26.
If an organism reproduces by asexual reproduction, a possible disadvantage would be ...
a)
takes less time to produce offspring
b)
results in low genetic variation of hte species
c)
ability to reproduce in the absence of a mate
d)
allows for more genetic variation in the offspring
27.
Sexual reproduction ...
a)
produces offspring that are identical to the parent
b)
decreases the chances of survival of the species
c)
results in genetic material being donated to offspring by only one parent
d)
results in genetic variation in the offspring
28.
There are more right handed people than there are left handed people. Therefore, which of the following could be a correct assumption to explain this?
a)
right handedness is a submissive trait
b)
right handedness is a recessive trait
c)
right handedness is a dominant trait
d)
right handedness is a rare trait
29.
__________ worked with pea plants to prove that traits are passed from parent to offspring.
a)
Reginald Punnett
b)
Gregor Mendel
30.
Purebred is another word for __________, while hybrid is another word for __________.
a)
dominant; recessive
b)
recessive; dominant
c)
homozygous; heterozygous
d)
heterozygous; homozygous
31.
If you cross the genotype GG with genotype Gg, what is the ratio of purebred to hybrid?
a)
2:2
b)
3:1
c)
4:0
d)
1:3
32.
If a child has red hair, they inherited a certain _______________ from their parents.
a)
ratio
b)
trait
c)
probability
d)
sex chromosome
33.
A male is heterozygous for a certain trait and a female is homozygous recessive. What is the probability that one of their offspring will show the recessive phenotype?
a)
0%
b)
25%
c)
50%
d)
100%
34.
A male and a female are both heterozygous for a certain trait. What is the probability of one of their offspring will show the recessive phenotype?
a)
0%
b)
25%
c)
50%
d)
100%
35.
A chart that crosses two cobinations of genes.
a)
one
b)
two
c)
three
d)
four
36.
The genetic material of an offspring of sexually reproducing organisms is best described as–
a)
identical to that of the other offspring
b)
a copy of the genetic material of the mother
c)
a copy of the genetic material of the father
d)
genes from both parents, in unique combinations
37.
Is the following asexual or sexual reproduction?
A labradoodle is a type of dog that is crossed between a labradoor retriever and a poodle. The labradoodle puppy takes on the traits of both of its parents. Female dogs have a pregnancy period of almost 70 days.
A labradoodle is a type of dog that is crossed between a labradoor retriever and a poodle. The labradoodle puppy takes on the traits of both of its parents. Female dogs have a pregnancy period of almost 70 days.
a)
Sexual
b)
Asexual
38.
Are recessive traits shown with capital or lowercase letters?
a)
Capital
b)
Lowercase
39.
An organism's appearance is known as it's....
a)
genotype
b)
allele
c)
gene
d)
phenotype
40.
A punnet square is used for...
a)
finding the difference between certain parents and offspring
b)
to organize all the possible combinations from parents to offspring
41.
What are the possible combinations of a pea plant with the alleles PP and a male pea plant with the alleles pp.
P= purple
p= white
P= purple
p= white
a)
all Pp
b)
all PP
c)
Pp,PP,Pp,PP
d)
all pp
42.
The different forms of genes are known as
a)
traits
b)
environment
c)
probability
d)
alleles
43.
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
44.
In the punnett square shown, what must the genotype of the missing parent be?
a)
BB
b)
Bb
c)
bb
d)
Tt
45.
Dominant or recessive?
Dd
Dd
a)
Dominant
b)
recessive
c)
neither
d)
homozygous
46.
What is genetics?
a)
The study of DNA nucleotides
b)
The study of heredity
c)
The study of a cell dividing into 2
d)
The study of eye color
47.
one set of instructions for an inherited trait
a)
heredity
b)
allele
c)
trait
d)
gene
48.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
49.
An allele whose trait always shows up in the organism when the allele is present.
a)
recessive allele
b)
dominant allele
c)
hidden allele
d)
present allele
50.
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
51.
father of genetics
a)
Gregor Mendel
b)
James Watson
c)
Dr. Robbins
d)
Francis Crick
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