Name ______________________________________ Date _________
Punnett Squares and Pedigrees
Unit 2 Lesson 5
Lesson Review
Choose the letter of the best answer.
3. Which of these statements correctly describes a
difference between sex-linked disorders and
other inherited genetic disorders?
1. Examine the Punnett square below.
A. Sex-linked disorders can be passed on from
parent to child, but other inherited genetic
disorders cannot be passed on.
B. Only males can be affected by sex-linked
disorders, but both males and females can be
affected by other inherited genetic disorders.
C. The genes for sex-linked disorders are found
on a sex chromosome, but the genes for other
inherited genetic disorders are found on other
chromosomes.
Which of the following choices gives the alleles
of the parents shown here?
D. The inheritance of a sex-linked disorder
within a family can be traced using a
pedigree, but other inherited genetic
disorders cannot be traced using a pedigree.
A. BB and BB
B. BB and Bb
C. Bb and Bb
D. Bb and bb
4. Which of these choices best describes what a
ratio shows?
2. Carrie is studying the genes of two fruit flies in
her lab. She knows what alleles they have. She
wants to know the potential combinations of
alleles their offspring could inherit. Which of
these choices would help Carrie identify the
potential combinations?
A. a comparison between two quantities
B. family relationships over several generations
C. the alleles of parents and offspring for a
given trait
D. the likelihood or chance that something will
happen
A. an allele
B. a carrier
5. Which of the following statements about
pedigrees is true?
C. a pedigree
D. a Punnett square
A. Boxes typically represent males and circles
typically represent females.
B. Pedigrees can only be used to trace the
occurrence of dominant traits.
C. Shaded shapes typically represent people
who do not have a specific trait.
D. Pedigrees show all of the allele combinations
that are possible in a cross.
Lesson Quiz
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Module A • Assessment Guide