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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 reproduce quickly.
B
They do not reproduce.
C
They do not have cells.
D
They cause disease.
2) Offspring that are the result of sexual reproduction are
A
never identical to the parents.
B
always identical to the parents.
C
sometimes identical to the parents.
D
never identical to other offspring.
3) Which of the following organisms reproduce sexually?
A
both plants and humans
B
neither plants or humans
C
plants
D
humans
4) During which type of reproduction do egg and sperm combine?
A
asexual reproduction of plants
B
asexual reproduction of animals
C
reproduction of bacteria
D
sexual reproduction of animals
5) How are traits determined?
A
the environment
B
many genes
C
one gene
D
all of the above
6) Where is genetic information contained in the cells of most organisms?
A
nucleus
B
mitochondria
C
cell wall
D
organelle
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
sexual reproduction
B
asexual reproduction
C
neither asexual or sexual reproduction
D
both asexual and 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
will all be carriers for the trait.
B
have a 50% chance of inheriting the trait.
C
cannot have the trait.
D
have a 25% 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
None of the above
D
Cc
12) Inherited diseases are used caused by
A
genes.
B
environmental factors
C
all of the above
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
cells, DNA, chromosomes
C
cells, chromosomes, DNA
D
chromosomes, cells, DNA
15) What would cause an offspring of asexual reproduction to NOT be identical to the parent?
A
fertilization occured
B
multicellular organisms formed
C
a clone
D
a genetic mutation
16) Which of the following statements is TRUE?
A
Only single-celled organisms can reproduce asexually.
B
none of the above
C
Only single-celled organisms can reproduce sexually.
D
Only multicellular organisms can reproduce asexually.
17) What are some trade-offs in choosing to be involved in genetic disease testing?
A
It may be hard to get health insurance.
B
both a and b
C
There are no trade-offs with this decision.
D
You might find out you have the disease.
18) One of the first people to study patterns of heredity scientifically was
A
Antoine Marfan
B
Gregor Mendel
C
Robert Hooke
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
If relatives have heart disease you may be genetically inclined to get it. Eating well and exercising can reduce the risk.
C
If you have relatives with heart disease you will develop it also if you don't live a healthy life style.
D
Your life style triggers any genetic mutations in your system.
*select an answer for all questions
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