Practice genetic problems 1. Pigmented skin is dominant over non-pigmented (albi

Question

Practice genetic problems 1. Pigmented skin is dominant over non-pigmented (albino) skin. Curly hair is incompletely dominant over non-curly hair. A person who is heterozygous for curly hair (wavy) and pigmented skin and a person who has pigmented skin (genetically homozygous for this trait) but has straight hair decide to have a child a. What is the chance of their having a curly haired child with pigmented skin? b. What is the chance of their having a straight haired child with non-pigmented skin? c. What is the chance of their having a straight haired child with pigmented skin?

Explanation / Answer

Answer:

Pigmented = P_

Albino (non-pigmented)= pp

Curly hair = CC

Wavy hair = cc

Non-curly (straight) hair = cc

CcPp (wavy hair & pigmented skin) x PPcc (homozygous pigmented & straight hair)-----Parents

cP

CP

CcPP (wavy hair & Pigmented skin)

Cp

CcPp (wavy hair & Pigmented skin)

cP

ccPP (straight hair & Pigmented skin)

cp

ccPp (straight hair & Pigmented skin)

Wavy hair & Pigmented skin =1/2 = 50%

Straight hair & Pigmented skin = 1/2= 50%

a). The chance of the child with curly haired with pigmented skin = 0%

b). The chance of the child with straight haired with non-pigmented skin = 0%

c). The chance of the child with straight haired with pigmented skin = 50%

cP

CP

CcPP (wavy hair & Pigmented skin)

Cp

CcPp (wavy hair & Pigmented skin)

cP

ccPP (straight hair & Pigmented skin)

cp

ccPp (straight hair & Pigmented skin)

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.