Genetics Pedigree Analysis Quiz

What is a pedigree chart used for in genetics?

• To track the inheritance of a single trait through multiple generations

• To predict the weather patterns for agricultural purposes

• To map out cellular structures within an organism

• To calculate the probability of genetic mutations occurring

In an autosomal recessive pedigree, what is true about carriers of the trait?

• They show the trait phenotypically

• They do not show the trait but can pass it to their offspring

• They cannot pass the trait to their offspring

• They are always male

Which of the following is a characteristic of an autosomal dominant pedigree?

• The trait tends to skip generations

• The trait does not skip generations

• Only males are affected

• Only females are affected

In a sex-linked (X-linked) recessive pedigree, which gender is more likely to express the trait?

• Male

• Female

• Both genders are equally likely

• It is impossible to determine

What does it mean if a trait is autosomal?

• It is linked to one of the sex chromosomes

• It is not linked to any chromosome

• It is linked to one of the chromosomes that determine sex

• It is not linked to the sex chromosomes

How can you distinguish an autosomal recessive trait in a pedigree?

• The trait appears in every generation

• Only males are affected

• The trait can skip generations

• The trait is only seen in females

How many generations are shown in this pedigree?

• 1
• 2
• 3
• 4

What does an open circle represent?

• Not Affected Male
• Not Affected Female
• Affected Male
• Affected Female

What do half colored symbols represent?

• The individual is a carrier (heterozygous).
• The individual expresses the trait.
• The individual has both recessive alleles.
• The individual has both dominant alleles.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What inheritance pattern is pictured?

• Sex-Linked

• Autosomal Recessive

• Autosomal Dominant

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2