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Heredity
Test Description: Punnett Squares, genetics
Instructions: Answer all questions to get your test result.
1) An organism's physical appearance is its
A
heterozygous
B
genotype
C
phenotype
D
cross
2) A Punnett square shows
A
all the possible outcomes of a genetic cross
B
only the dominant alleles in a genetic cross
C
only the recessive alleles in a genetic cross
D
the likelihood that a particular event will occur
3) Factors that control traits are called
A
genes
B
pedigrees
C
parents
D
mutations
4) What is probability?
A
the results from a series of events
B
the likelihood that a particular event will occur
C
genotype
D
the number of times a coin will land heads up
5) If you cross a blue pet (BB) x a yellow pet (bb) what is the probability that the offspring will be blue?
A
100%
B
25%
C
50%
D
75%
6) What is a mutation?
A
Any change in the genotype of a cell
B
A purebred
C
Any change in a gene or chromosome
D
Any change that is harmful to an organism
7) What is a karyotype?
A
a picture of the chromosomes in a cell of the developing baby
B
blood taken from a newborn baby
C
the fluid that surrounds the baby before it is born
D
a picture of a baby before it is born
8) A female is represented by ____ and a male by _____.
A
XX, XY
B
XY, XX
C
XX, YY
D
Xx, Yy
9) Sex-linked genes are genes on
A
the other 22 pairs of chromosomes
B
the Y chromosome only
C
the X chromosome only
D
the X and Y chromosomes
10) A carrier is a person who has
A
2 dominant alleles for a trait
B
more than 2 alleles for a trait
C
2 recessive alleles for a trait
D
one recessive and one dominant allele for a trait
*select an answer for all questions
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