True/False
Indicate whether the sentence or statement is true
or false.
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1.
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The
information needed by a cell to direct its activities and to determine its characteristics is
contained in molecules of deoxyribonucleic acid (DNA).
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2.
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Gametes are diploid so that when fertilization occurs, the resulting zygote will have
the characteristic number of chromosomes for that species.
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3.
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A
karyotype is a type of gene.
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4.
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Cell
division in bacteria and eukaryotes takes place in precisely the same manner.
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5.
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Cells
spend most of their lifetime in interphase.
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6.
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After
the replication of a cell’s chromatids, there are twice as many centromeres as there are
chromosomes.
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7.
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Asexual reproduction occurs by mitosis.
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8.
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During telophase, a nuclear envelope surrounds each new set of
chromosomes.
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9.
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Chromatids separate from each other during telophase.
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10.
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After
mitosis and cytokinesis, each new cell has a complete set of the original cell’s
chromosomes.
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Completion
Complete each sentence or
statement.
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11.
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Following replication of its DNA, each chromosome contains two ____________________,
which are attached to each other by a centromere.
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12.
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Chromosomes that are not involved in sex determination are called
____________________.
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13.
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A
picture of a cell’s chromosomes is called a ____________________.
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14.
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The
sequence of events that occurs in a cell from one mitotic division to the next is called the
____________________.
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15.
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“Cables” made of microtubules that extend from the poles of a cell to the
centromeres during cell division are called ____________________.
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16.
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In
mitosis, anaphase follows ____________________.
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17.
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The
stage of meiosis during which homologues line up along the equator of the cell is called
____________________.
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18.
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The
process called ____________________ guarantees that the number of chromosomes in gametes is half the
number of chromosomes in body cells.
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19.
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A
reciprocal exchange of corresponding segments of DNA is called ____________________.
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20.
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As a
result of spermatogenesis, ____________________ cells are produced that can all develop into sperm
cells. As a result of oogenesis, only ____________________ cell(s) develop(s) into (an) egg
cell(s).
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