Multiple Choice
Identify the choice that best
completes the statement or answers the question.
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1)
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Starting with a fertilized egg (zygote), a series of five cell divisions would
produce an early embryo with how many cells?
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Use the following information to answer the questions below. The lettered
circle in Figure 12.1 shows a diploid nucleus with four chromosomes. There are two pairs of
homologous chromosomes, one long and the other short. One haploid set is symbolized as black and the
other haploid set is gray. The chromosomes in the unlettered circle have not yet replicated. Choose
the correct chromosomal conditions for the following stages. 
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2)
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What is the correct chromosomal condition for one daughter nucleus at telophase
of mitosis?
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3)
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 If the cell whose nuclear material is
shown in Figure 12.2 continues toward completion of mitosis, which of the following events would
occur next? A) | cell membrane synthesis | B) | spindle fiber formation | C) | nuclear envelope
breakdown | D) | formation of telophase nuclei | E) | synthesis of
chromatids |
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Refer to the drawings in Figure 13.2 of a single pair of homologous chromosomes
as they might appear during various stages of either mitosis or meiosis, and answer the following
questions. 
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4)
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Which diagram represents anaphase I of meiosis?
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The following questions refer to the pedigree chart in Figure 14.2 for a family,
some of whose members exhibit the dominant trait, W. Affected individuals are indicated by a
dark square or circle. 
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5)
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What is the genotype of individual II–5?
A) | WW | B) | Ww | C) | ww | D) | WW or ww | E) | ww or
Ww |
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