Life Science: Life's Structure and Function, Book A

Chapter 5: Heredity

Standardized Test Practice

1.
What is the genotype of the father?

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A)PP
B)Pd
C)pp
D)P
2.
What is the genotype of the mother?

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A)PP
B)pp
C)Pd
D)P
3.
How many phenotypes would result from the following Punnett square, assuming the trait has a pattern of complete dominance?

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A)2
B)1
C)3
D)4
4.
A pure bred red-flowering plant and a pure bred white-flowering plant cross. The offspring produce pink flowers. What pattern of inheritance is this?
A)complete dominance
B)polygenic inheritance
C)incomplete dominance
D)multiple alleles
5.
Blood type in humans is an example of
A)polygenic inheritance.
B)incomplete dominance.
C)sex-linked inheritance.
D)multiple alleles.
6.
An allele carried on a Y chromosome will affect
A)all of the female offspring.
B)some of the male and female offspring.
C)all of the male offspring.
D)none of the offspring.
7.
What must be true of a person with cystic fibrosis?
A)At least one parent was a carrier for cystic fibrosis.
B)The mother was a carrier for cystic fibrosis.
C)One of the parents had the condition cystic fibrosis.
D)Both parents had at least one allele for cystic fibrosis.
8.
Treating genetic disorders by inserting normal alleles into cells is called
A)Medelian genetics.
B)gene therapy.
C)ploygenic inheritance.
D)pedigree analysis.
9.
Recombinant DNA is made by
A)exposing DNA to X rays or radioactive substances.
B)causing random mutations to occur during the copying of DNA.
C)inserting a segment of DNA from one organism into a chromosome of another organism.
D)crossing two organisms that are homozygous for a specific trait.
10.
A chromosome disorder occurs when
A)one nitrogen base has been substituted for another.
B)a new organism receives more or fewer chromosomes than normal.
C)meiosis fails to occur.
D)DNA is not copied correctly during mitosis.
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