Question

a. for questions 1-9, use the pedigree chart shown below. some of the labels may be used more than once.use a,b,c, or d for 1-61. a male2. a female3. a marriage4. a person who expresses the trait5. a person who does not express the trait6. a connection between parents and offspring7. how many generations are shown on this chart?assuming the chart above is tracing the dominant trait of \white forelock (f)\ through the family. f is a tuft of white hair on the forehead.8. what is the most likely genotype of individual \a\? (ff, ff or ff)9. what is the most likely genotype of individual \c\? (ff, ff or ff)dominant pedigree

Explanation:

Step1: Match symbols to terms

1. Male: Square (C)
2. Female: Circle (A)
3. Marriage: Horizontal line (B)
4. Expresses trait: Shaded shape (A)
5. Doesn't express trait: Unshaded shape (C)
6. Parent-offspring link: Vertical line (D)

Step2: Count generations

Top (A/C) = Gen1; Middle row = Gen2; Bottom row = Gen3. Total = 3

Step3: Genotype of individual A

A is unshaded (no dominant trait). Recessive genotype is $ff$.

Step4: Genotype of individual C

C is unshaded (no dominant trait). Recessive genotype is $ff$.

Answer:

1. C
2. A
3. B
4. A
5. C
6. D
7. 3
8. $ff$
9. $ff$