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Worksheets7th Grade Unit 3: Heredity & Reproduction
Total questions: 25
Worksheet time: 51mins
Name
Class
Date
1.
Heredity is best described as...
a)
storage of waste material produced by cell processes.
b)
passage of genetic material from generation to generation.
c)
communication of information between an organism’s cells.
d)
production of energy for use in an organism’s cells.
2.
Why did Mendel choose to study pea plants in order to learn how traits are passed from parent to offspring?
a)
Pea plants grow quickly
b)
Pea plants are asexual
c)
Pea plants are rare and expensive
d)
Pea plants are take years to grow
3.
_____________________ is the appearance of an organism, or how it looks
a)
phenotype
b)
genotype
c)
recessive trait
d)
Bb
4.
Will the trait expressed be dominant or recessive?
Dd
Dd
a)
dominant
b)
recessive
c)
neither
d)
homozygous
5.
Which type of reproduction creates offspring from a single parent?
a)
asexual
b)
sexual
c)
internal
d)
external
6.
Which statement is always true about asexual reproduction?
a)
it always requires 2 parents
b)
all the offspring looks just like the parent
c)
it happens by joining two single-celled organisms
d)
an embryo is formed in the process
7.
Where does fertilization in a plant occur?
a)
flower
b)
leaf
c)
stem
d)
root
8.
A potato begins to develop new stems or sprouts from its eyes. Each of these sprouts can become a new potato plant. What is this?
a)
asexual reproduction
b)
sexual reproduction
c)
fertilization
9.
What does the image show?
a)
budding
b)
sporulation
c)
vegetative propagation
d)
binary fission
10.
Which example would result in new cells that are most different from the parent cells?
a)
yeast cells budding
b)
bacteria cells going through fission
c)
skin cells dividing to produce more skin cells
d)
sperm and egg cells uniting to produce fertilized egg cells
11.
What is a disadvantage to asexual reproduction?
a)
It produces more offspring
b)
It produces fewer offspring
c)
They are all the same and do not have diversity
d)
They are all different and have diversity
12.
If you are a boy, what percent of your genes did you get from your dad?
a)
25%
b)
50%
c)
75%
d)
100%
13.
What is an advantage of asexual reproduction?
a)
It quickly produces more offspring
b)
It produces fewer offspring
c)
It requires a mate
d)
It produces identical offspring
14.
What is a disadvantage of sexual reproduction?
a)
It produces fewer offspring & requires more energy
b)
It produces more offspring
c)
It generate genetically diverse offspring
d)
It generates identical offspring
15.
Lacy and her grandmother are both double jointed. Lacy's double jointed trait is _________.
a)
inherited
b)
acquired
16.
How much DNA do you receive from one parent in sexual reproduction?
a)
25%
b)
50%
c)
75%
d)
100%
17.
If T=Tall and t=short, and my genotype is Tt, what is my phenotype?
a)
tall
b)
short
c)
dwarf
d)
medium height
18.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
19.
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
20.
Which is the correct phenotype for this organism?
a)
BB
b)
blue
c)
green
d)
bb
21.
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
22.
B=black, b=brown. Two black mice mate and have some black and some brown offspring. What is the genotype of the parents?
a)
BB x Bb
b)
BB x bb
c)
Bb x Bb
d)
Bb x bb
23.
If a pea plant were homozygous recessive for height, how would its alleles be represented?
a)
TT
b)
Tt
c)
tt
d)
tT
24.
A cross between two tall garden pea plants produced 314 tall plants and 98 short plants. What genotypes are the parents?
a)
TT and tt
b)
TT and Tt
c)
Tt and Tt
d)
TT and TT
25.
If the four existing children in a family are all sons, what chance would there be that the next child would also be a son?
a)
75%
b)
50%
c)
25%
d)
20%
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