Genetics Formative Quiz

In a pedigree chart, squares represent

• males
• females
• only children
• only adults

When a trait  is genetically determined by an allele located on an x chromosome, we call this _______

• a mutation
• incomplete dominance
• co-dominance
• a sex-linked trait

Using the pedigree chart, answer the following question:  How many heterozygous people are there?

• seven
• six
• five
• four

A homozygous dominant red flower is crossed with a homozygous dominant white flower.  The offspring all have an intermediate phenotype between the parents.  What model of inheritance is this an example of?

• dominant-recessive
• co-dominance
• incomplete dominance

Hibiscus plants have dominant alleles for being purple and recessive allele for being white. Using the punnett Square, write a thesis about what the plants' offsprings will most likely look like.

• The hibiscus plants will have a 25% chance of having a purple offspring

• The hibiscus plants will have a 50% chance of having a purple offspring

• The hibiscus plants will have a 75% chance of having a purple offspring

• The hibiscus plants will have a 100% chance of having a purple offspring

Hibiscus plants have dominant alleles for being purple and recessive allele for being white. Using the punnett Square, write a thesis about what the plants' offsprings will most likely look like.

• The hibiscus plants will have a 25% chance of having a WHITE offspring

• The hibiscus plants will have a 50% chance of having a WHITE offspring

• The hibiscus plants will have a 75% chance of having a WHITE offspring

• The hibiscus plants will have a 100% chance of having a WHITE offspring

T - tall and t = short
In the punnett square below, what belongs in the missing square

• tt
• Tt
• Bb
• TT

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

W=white hair
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?

• none
• 3/4
• 1/2
• all

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

What are the possible genotypes for this cross?

• TT = 25% Tt= 50% tt=25%
• all tall
• TT= 75% tt = 25%
• Tt = 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Jen and Tony want to have an offspring, but both parents have a family history of Huntington's disease (represented by the letter T). Huntington's disease is a DOMINANT disorder. Looking at the punnett square, which of the following is a claim you can make about Jen and Tony's offsprings.

• Jen and Tony should have an offspring because they have a 25% chance of giving birth to a child with Huntintong's disease

• Jen and Tony should have an offspring because they have a 50% chance of giving birth to a child with Huntintong's disease

• Jen and Tony should NOT have an offspring because they have a 75% chance of giving birth to a child with Huntintong's disease

• Jen and Tony should NOT have an offspring because they have a 100% chance of giving birth to a child with Huntintong's disease