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