Pedigree and Inheritance

In __________, uppercase letters represent dominant alleles and lowercase letters represent recessive alleles.

• Cells

• Genotypes

• Genetics

• Symbols

__________ is the two alleles that control the phenotype of a trait.

• Genotype

• Phenotype

• Codominance

• Pairs

What is this?

• Pedigree

• Karyotype

• Venn diagram

• Punnett Square

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In a pedigree, what shape represents a male?

• circle

• square

• triangle

• diamond

In the second generation-how many people are carriers of the trait?

• 2

• 3

• 5

• 6

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In a pedigree, which shape represents a male?

• circle

• square

In the second generation of this pedigree, how many people are carriers of the trait? *Remember: a carrier does not have the disorder/disease, but can pass it on to his/her children.

• 1

• 2

• 3

• 5

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

On this pedigree, the allele for curly hair is dominant. The couple labeled 2 both have curly hair, but have a daughter who does not have curly hair. Therefore, we can tell from the chart that for the couple labeled 2 -

• the male is heterozygous and the female is heterozygous.

• the male is homozygous recessive and the female is homozygous dominant.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Why do all the daughters in Generation II carry the colorblind gene?

• Because mom passed on the gene.

• Because dad passed on the X chromosome.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The trait this pedigree traces is recessive because it skips a generation and individuals can be carriers. What is the most likely genotype for person III-3?

• GG

• Gg

• gg

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2