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