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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 do not reproduce.
B
They reproduce quickly.
C
They cause disease.
D
They do not have cells.
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
plants
B
humans
C
neither plants or humans
D
both plants and humans
4) During which type of reproduction do egg and sperm combine?
A
asexual reproduction of animals
B
reproduction of bacteria
C
sexual reproduction of animals
D
asexual reproduction of plants
5) How are traits determined?
A
many genes
B
the environment
C
all of the above
D
one gene
6) Where is genetic information contained in the cells of most organisms?
A
mitochondria
B
nucleus
C
cell wall
D
organelle
7) Which of the following represents a dominant characteristic?
A
RR, and Rr
B
Rr and rr
C
RR, 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
asexual reproduction
B
none of the above
C
cloning
D
sexual reproduction
9) During which type of reproduction do offspring receive genetic material from one parent?
A
asexual reproduction
B
sexual reproduction
C
both asexual and sexual reproduction
D
neither asexual or sexual reproduction
10) Two parents are both carriers for a genetic trait that is based on only one gene. This means that their offspring
A
cannot have the trait.
B
have a 25% chance of inheriting the trait.
C
will all be carriers for 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
None of the above
C
Cc
D
cc
12) Inherited diseases are used caused by
A
environmental factors
B
all of the above
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
asexual reproduction
B
sexual reproduction
14) Which list below describes how the human body is organized from largest to smallest structure?
A
DNA, chromosomes, cells
B
chromosomes, cells, DNA
C
cells, DNA, chromosomes
D
cells, chromosomes, DNA
15) What would cause an offspring of asexual reproduction to NOT be identical to the parent?
A
multicellular organisms formed
B
a clone
C
a genetic mutation
D
fertilization occured
16) Which of the following statements is TRUE?
A
Only single-celled organisms can reproduce sexually.
B
Only multicellular organisms can reproduce asexually.
C
none of the above
D
Only single-celled organisms can reproduce asexually.
17) What are some trade-offs in choosing to be involved in genetic disease testing?
A
There are no trade-offs with this decision.
B
You might find out you have the disease.
C
both a and b
D
It may be hard to get health insurance.
18) One of the first people to study patterns of heredity scientifically was
A
Antoine Marfan
B
Robert Hooke
C
Mary-Claire King
D
Gregor Mendel
19) How can every human being be unique?
A
all the above
B
The 1/2 of the genetic information that is contributed is random.
C
Humans have two parents who give 1/2 their genetic material to the child.
20) Explain how heart disease is a combination of genetics and environment.
A
Your life style triggers any genetic mutations in your system.
B
If relatives have heart disease you may be genetically inclined to get it. Eating well and exercising will prevent it .
C
If relatives have heart disease you may be genetically inclined to get it. Eating well and exercising can reduce the risk.
D
If you have relatives with heart disease you will develop it also if you don't live a healthy life style.
*select an answer for all questions
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