Module 10 Lessons 4,5 Quiz

Which statement is true of carriers? (There are more than one answer)

• They can pass a gene for a recessive disorder.

• They express the recessive trait.

• They have one dominant allele.

• They are heterozygous for a recessive disorder.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What do the roman numerals in the pedigree diagram represent?

• Generations in a family

• A family

• Male or Female

• Homozygous alleles

How many of the offspring in this example have the alleles for Tay-Sachs disease?

• 1

• 3

• 0

• 2

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

You and your colleagues are constructing a pedigree for a boy with cystic fibrosis. The individual's younger brother has also been diagnosed with cystic fibrosis. How would these brothers be represented in a pedigree?

• Both would be represented as completely shaded squares.

• Both would be represented as completely shaded circles.

• Both would be represented as unshaded squares.

• The older brother would be a shaded square, while the younger brother would be a half-shaded square.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Blood type A has a genotype of...

• I^aI^a

• ii

• I^bI^b

• I^aI^b

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Blood type B has a genotype of...

• I^aI^a

• I^bI^b

• ii

• I^aI^b

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Blood type O has a genotype of...

• I^aI^a

• I^bI^b

• ii

• I^aI^b

Tags

NGSS.HS-LS3-2

Blood type AB has a genotype of...

• I^aI^a

• I^bI^b

• ii

• I^aI^b

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Why is sickle-cell disease a codominant genetic condition?

• both alleles are expressed in the heterozygous condition.

• No alleles are expressed in the heterozygous condition.

• Both alleles are expressed in the homozygous condition.

• An intermediate phenotype is expressed.

Human blood groups are determined by___.

• single alleles

• multiple alleles

• gene linkage

• incomplete dominance.