Multiple Choice Identify the
choice that best completes the statement or answers the question.
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1.
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Chromatids that are attached at
the centromere are called ______ chromatids. Chapter 11
a. | mother | d. | sister | b. | daughter | e. | duplicated | c. | preprogrammed |
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2.
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Why are telomeres important?
Chapter 11
a. | They keep track of the number of cell divisions that a cell undergoes. | d. | They provide a site
of attachment for spindles in cell division. | b. | They provide extra nucleotides when needed
during replication. | e. | They
provide a buffer against the loss of more valuable DNA. | c. | They are needed for
histone and DNA arrangement. |
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3.
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Chapter 11
a. | centromeres | d. | centrioles | b. | centrobodies | e. | centers | c. | centrophils |
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4.
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In asexual reproduction, new combinations of genes arise by
Chapter 12
a. | mutation. | d. | crossing over | b. | random segregation of chromosomes into
gametes. | e. | new combinations
of genes do not occur. | c. | random assortment of
gametes. |
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5.
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Asexually produced daughter cells are Chapter 12
a. | identical to each other. | d. | different from each
other. | b. | identical to the mother cell. | e. | identtical to each other and identical to the
mother cell. | c. | different from the mother cell. |
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6.
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In Mendel's time, most people believed that Chapter
13
a. | all genetic traits bred true. | d. | acquired characteristics were
inherited. | b. | only certain forms of domesticated plants and animals bred true. | e. | the inheritance of traits was controlled by
factors in blood. | c. | the characteristics of parents were blended in
the offspring. |
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7.
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a. | a recessive gene | d. | the location of an allele on a chromosome | b. | an unmatched
allele | e. | a dominant
gene | c. | a sex chromosome |
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8.
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Chapter 14 In humans, skin cell organelles called _____ produce pigment.
a. | vesicles | d. | lysosomes | b. | Melanosomes | e. | lysosomes | c. | endoplasmic
reticulum |
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9.
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In a pedigree chart, a female who does not demonstrate the trait being studied
is represented by a Chapter 14
a. | darkened square | d. | darkened triangle | b. | clear diamond | e. | darkened oval | c. | clear
circle |
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10.
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Enzymes used to cut DNA
molecules in recombinant DNA research are: Chapter 15
a. | ligases | d. | DNA polymerases | b. | restriction enzymes | e. | replicases | c. | transcriptases |
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11.
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During the Human Genome Project,
what was the major aim of the private company Celera Genomics by sequencing the human genome first?
Chapter 15
a. | a monopoly of drugs based on the genome | d. | recognition in the scientific
community | b. | a patent on the human genome | e. | government funding for future
projects | c. | leverage with pharmaceutical lobbyistsgovernment funding for future
projects |
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