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Genetics And Heredity
Test Description: Use this study tool to prepare for your 7th grade Science test.
Instructions: Answer all questions to get your test result.
1) Why are fruit flies sometimes chosen as test subjects by scientists studying genetics?
A
They cause disease.
B
They do not have cells.
C
They reproduce quickly.
D
They do not reproduce.
2) Offspring that are the result of sexual reproduction are
A
sometimes identical to the parents.
B
never identical to the parents.
C
always identical to the parents.
D
never identical to other offspring.
3) Which of the following organisms reproduce sexually?
A
both plants and humans
B
humans
C
neither plants or humans
D
plants
4) During which type of reproduction do egg and sperm combine?
A
reproduction of bacteria
B
asexual reproduction of animals
C
sexual reproduction of animals
D
asexual reproduction of plants
5) How are traits determined?
A
all of the above
B
many genes
C
the environment
D
one gene
6) Where is genetic information contained in the cells of most organisms?
A
mitochondria
B
cell wall
C
organelle
D
nucleus
7) Which of the following represents a dominant characteristic?
A
Rr and rr
B
RR, Rr, and rr
C
Rr and rr
D
RR, and Rr
8) During which type of reproduction do the offspring receive half its genetic material f rom each parent?
A
sexual reproduction
B
none of the above
C
asexual reproduction
D
cloning
9) During which type of reproduction do offspring receive genetic material from one parent?
A
neither asexual or sexual reproduction
B
both asexual and sexual reproduction
C
sexual reproduction
D
asexual reproduction
10) Two parents are both carriers for a genetic trait that is based on only one gene. This means that their offspring
A
will all be carriers for the trait.
B
cannot have the trait.
C
have a 25% chance of inheriting the trait.
D
have a 50% chance of inheriting the trait.
11) If the letter 'c' is used to represent a genetic trait, which of the following would most likely be used to represent the recessive condition?
A
cc
B
CC
C
Cc
D
None of the above
12) Inherited diseases are used caused by
A
all of the above
B
environmental factors
C
genes.
D
virusus
13) A worm that is split in two will have each half grows back into a complete worm. This is an example of
A
sexual reproduction
B
asexual reproduction
14) Which list below describes how the human body is organized from largest to smallest structure?
A
chromosomes, cells, DNA
B
cells, chromosomes, DNA
C
DNA, chromosomes, cells
D
cells, DNA, chromosomes
15) What would cause an offspring of asexual reproduction to NOT be identical to the parent?
A
a clone
B
a genetic mutation
C
fertilization occured
D
multicellular organisms formed
16) Which of the following statements is TRUE?
A
Only single-celled organisms can reproduce sexually.
B
none of the above
C
Only multicellular organisms can reproduce asexually.
D
Only single-celled organisms can reproduce asexually.
17) What are some trade-offs in choosing to be involved in genetic disease testing?
A
both a and b
B
There are no trade-offs with this decision.
C
It may be hard to get health insurance.
D
You might find out you have the disease.
18) One of the first people to study patterns of heredity scientifically was
A
Robert Hooke
B
Gregor Mendel
C
Antoine Marfan
D
Mary-Claire King
19) How can every human being be unique?
A
all the above
B
Humans have two parents who give 1/2 their genetic material to the child.
C
The 1/2 of the genetic information that is contributed is random.
20) Explain how heart disease is a combination of genetics and environment.
A
If relatives have heart disease you may be genetically inclined to get it. Eating well and exercising will prevent it .
B
Your life style triggers any genetic mutations in your system.
C
If you have relatives with heart disease you will develop it also if you don't live a healthy life style.
D
If relatives have heart disease you may be genetically inclined to get it. Eating well and exercising can reduce the risk.
*select an answer for all questions
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