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Genetics
Test Description: Basic terminology Review
Instructions: Answer all questions to get your test result.
1) Different forms of a trait (blue eyes, brown eyes, etc) are called:
A
homozygotes
B
variables
C
alleles
D
genotypes
2) The combination of letter symbols used to represent your genes for a trait (ex. AA) is your:
A
phenotype
B
genotype
C
punnett square
D
pedigree
3) The physical appearance of an individual is their:
A
pedigree
B
genotype
C
phenotype
D
allele
4) If you have the combination Aa for a trait, then you are _____ for that trait.
A
allelic
B
heterozygous
C
phenotypic
D
homozygous
5) How would we genetically represent a male individual who possesses a sex-linked trait?
A
XX
B
X*X
C
XY*
D
X*Y
6) In a pedigree _______ represent males, and _______ represent females.
A
triangles, circles
B
squares, circles
C
circles, squares
D
squares, triangles
7) A family tree diagram that is used to track traits through several generations is known as a:
A
genotype
B
pedigree
C
phenotype
D
punnett square
8) When a cell receives too many or too few chromosomes during meiosis, ____ has occurred.
A
erythroblastosis fetalis
B
mitosis
C
phenylketoneuria
D
nondisjunction
9) Sex-linked traits are:
A
most commonly seen in males.
B
always carried by males, but not shown.
C
always fatal.
D
found only in females.
10) The sex of an offspring is determined by:
A
both parents
B
the mother
C
the day of the week
D
the father
*select an answer for all questions
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