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Genetics Review
Test Description: Cell division, DNA, Punnett squares, genetic engineering
Instructions: Answer all questions to get your test result.
1) The different forms of a gene (trait) are called ___________.
A
genotypes
B
alleles
C
chromosomes
D
phenotypes
2) An organism with two identical alleles for a trait is __________.
A
heterozygous
B
homozygous
C
dominant
D
recessive
3) If the body cells of an organism have 10 chromosomes, then its sex cells (gametes) would have _______.
A
10 chromosomes
B
5 chromosomes
C
20 chromosomes
D
15 chromosomes
4) Which of the following do your genes affect?
A
your ability to ride a bike
B
the function of your circulatory system
C
your ability to play soccer
D
how your body grows and looks
5) Your sister is very good at playing the piano. What is her piano playing ability an example of?
A
a dominant gene
B
an inherited trait
C
a learned behavior
D
a recessive gene
6) What are recessive genes?
A
strong genes that are in control
B
genes that help you learn new things
C
genes that you only get from your father
D
so-called weaker genes that hide when a dominant gene is present
7) Which of the following is an inherited trait?
A
playing video games
B
using the computer
C
freckles
D
reading books
8) The gene from brown eyes is dominant. What is needed in order for a person to have brown eyes?
A
at least one brown eye gene
B
the green eye genes
C
three brown eye genes
D
no genes for brown eyes
9) What is a learned behavior?
A
traits and physical features that your parents pass onto you
B
tiny sets of instructions inside every cell in your body
C
a feature that you are born with
D
something you are taught or learn through experience
10) What is true about learned behaviors?
A
they determine which genes are dominant and which genes are recessive
B
they determine what color your hair and eyes are
C
they make it possible for people to keep growing and learning new things
D
they control how tall or short you are
*select an answer for all questions
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