Question

The presence of freckles (F) is dominant to no freckles (f). Jake and his mom have

freckles, but his sister and Dad do not have freckles. Complete the Punnett square
that shows Jake's family.

Answer 1

Answer/Explanation:

(F) => dominant allele for presence of freckles

(f) => recessive allele for no freckles

Since Jake has freckles while his sister has no freckles, therefore:

Jake's dad must be => (ff) (this is the only instance the recessive trait of no freckle can manifest)

Jake's mum would be => (Ff)

Let's complete the Punnett square that shows Jake's family:

Dad------|---f---|---f---|

Mum--F-| Ff | Ff

----------f-| ff | ff

(ff) × (Ff) - Jake's Parent

Ff - Jake

ff - Jake's sister