Glencoe Science Level Red

Chapter 20: The Role of Genes in Inheritance

Standardized Test Practice

1
The process shown in the diagram is called

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A)mitosis.
B)cytokinesis.
C)meiosis.
D)regeneration.
2
What is the end result of cell division that involves the process shown in the diagram?

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A)a cell with two nuclei
B)two new cells
C)four new cells
D)a regenerated cell
3
Which of the following does not result in offspring that are genetically identical to the parent?
A)budding
B)sexual reproduction
C)mitosis
D)regeneration
4
The process by which sex cells are produced is called
A)cloning.
B)meiosis.
C)regeneration.
D)mitosis.
5
During meiosis, the nucleus of the parent cell divides
A)once.
B)twice.
C)three times.
D)four times.
6
The sequence of bases in DNA forms a code. How many different kinds of bases does DNA contain?

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A)4
B)3
C)52
D)500
7
Where are the bases in a DNA molecule?

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A)the rungs of the twisted ladder
B)the sides of the twisted ladder
C)the top of the twisted ladder
D)the bottom of the twisted ladder
8
A change in a gene or chromosome is called a
A)allele.
B)mutation.
C)variation.
D)dominant trait.
9
In pea plants, white flower color is recessive. In order to inherit white flower color, a pea plant must receive
A)at least one allele for white flower color from one parent.
B)at least one allele for purple flower color from one parent.
C)an allele for white flower color from each parent.
D)two dominant alleles.
10
Which of these is not a trait controlled by genetics?
A)blue eyes
B)freckles
C)bleached blond hair
D)dimples
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