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Genetics Review
Test Description: Mendelian genetics, mutations, biotechnology, recombinant DNA, genomics
Instructions: Answer all questions to get your test result.
1) What is PCR?
A
A technique to amplify DNA
B
A method to cleave DNA
C
is produced from ribonucleoside triphosphates
D
A technique used to transcribe DNA
2) Restriction enzymes
A
cleave DNA at highly specific sequences
B
add methyl groups to DNA
C
are not useful to bacteria
D
are made by eukaryotic cells
3) The phenotype of an individual
A
is the genetic constitution of the organism
B
depends at least in part to the genotype
C
is either homozygous or heterozygous
D
determines the genotype
4) Linked genes
A
always have multiple alleles
B
are always on the same chromosome
C
never show crossing over
D
must be immediately adjunct to one another on the chromosome
5) In epistasis
A
the behavior of two genes is completely independent
B
a portion of the chromosome is deleted
C
nothing changes from generation to generation
D
one gene alters the effect of another
6) Which statement about a homozygote is untrue?
A
each of its cells possesses two copies of that allele
B
Each of its gametes possesses one copy of that allele
C
it is true breeding with respect to that allele
D
its parents were necessarily homozygous
7) Which of the following is not a type of chromosomal mutation?
A
point mutation
B
deletion
C
inversion
D
duplication
8) A nonsense mutation is
A
one that has no effect on the amino acid sequence
B
a change in the genetic code for one amino acid to one for another amino acid
C
a base substitution that results in a stop codon
D
one that results in a basic amino acid being substituted for an acidic one
9) Germline mutations
A
are ones that occur in any part of the body
B
cannot be passed on the offspring
C
are ones that occur in the gametes
D
are usually fatal
10) Gel electrophoresis
A
is a method used to cleave DNA
B
can be used to identify animo acids in a protein
C
is a way to separate or purify DNA fragments
D
cannot be used to determine the size of DNA fragments
*select an answer for all questions
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