Introduction to Genetics Answers

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Which are characteristics of epithelial cells? Select two options. are unable to be used for secretion of materialsmain cells of the nervous systemfound lining many areas that contact the external environmentplays a role in protectioncarry oxygen through the bodymake up the skeletal muscle

A
are unable to be used for secretion of materials
B
main cells of the nervous system
C
found lining many areas that contact the external environment
D
plays a role in protection
E
carry oxygen through the body
F
make up the skeletal muscle
22
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It is crucial that the process of mitosis is error free. This is because otherwise healthy cells can

A
grow into giant super cells.
B
undergo meiosis.
C
become cancer cells.
D
produce two identical cells.
23

Which correctly describes crossing over?

A
the process whereby non-sister chromatids exchange genetic material
B
the process whereby homologous chromosomes are pulled to opposite poles of the cell
C
the process whereby sister chromatids are pulled to opposite poles of the cell
D
the process whereby homologous chromosome pairs align randomly along the metaphase plate
24

What is the end result of meiosis?

A
four identical daughter cells
B
four different daughter cells
C
two identical daughter cells
D
two different daughter cells
25

Which describes something that occurs during translation?

A
A DNA template is used to create an mRNA strand.
B
A tRNA template is used to create a DNA strand.
C
A tRNA template is used to create an mRNA strand.
D
An mRNA template is used to create an amino acid chain.

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