Genetics Pre-Assessment

A mom with the heterozygous gene for Widows peak and a father with the heterozygous gene for Widows peak: odds their baby HAS a widow's peak?

• 0%

• 25%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

A mom with a dominant HOMOZYGOUS gene of a hitchhiker's thumb and a dad with a homozygous recessive gene for a straight thumb. What is the baby's phenotype?

• 50% straight thumb

• 100% Hitchhiker's Thumb

• 25% Hitchhiker's Thumb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

If a mother has the homozygous dominant trait FF, what is her phenotype?

• Freckles

• Tall

• No PTC taste

• Widow's Peak

Tags

NGSS.HS-LS3-1

Genotype refers to the ...

• physical expression of the genes

• the possible combination of alleles in a gene

• whether an allele is dominant or recessive

• how an organism will appear

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

An offspring will receive how many alleles from each parent to determine a specific trait?

• one

• two

• three

• five

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

having two of the same genes for the trait (sometimes called purebred).

• homozygous

• hetrozygous

• protein

• chromosome

Tags

NGSS.HS-LS3-1

How many people in this whole pedigree have the trait/disease?

• 2

• 3

• 4

• 6

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

How many females are in this pedigree?

• 3

• 4

• 6

• 7

A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?

• 100% BB

• 75% BB and 25%Bb

• 50 % BB and 50% Bb

• 50% Bb and 50% bb

Tags

NGSS.HS-LS3-1

Which of the following is a phenotype?

• BB

• Bb

• bb

• Blue eyes