AnswersPMHS Biology I Q2Cell Differentiation and Specialization

Cell Differentiation and Specialization — Unit test Answers

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Centromeres split apart during

A
prophase
B
metaphase
C
anaphase
D
telophase
22
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During which phase of meiosis does crossing over of chromosomes occur?

A
prophase I
B
metaphase I
C
anaphase I
D
telophase I
23

Why is meiosis important for organisms?

A
It allows for genetic variation among organisms.
B
It determines which genes are dominant and which are recessive.
C
It produces genetically identical cells.
D
It provides a means of asexual reproduction.
24

Which process is characterized by the movement of particles from an area of high concentration to an area of low concentration across the plasma membrane without the use of energy?

A
hypertonic transport
B
active transport
C
passive transport
D
dynamic equilibrium
25

Which three processes are methods of genetic recombination?

A
natural selection, crossing over, and independent assortment
B
crossing over, independent assortment, and fertilization
C
independent assortment, fertilization, and natural selection
D
fertilization, natural selection, and crossing over

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