Name lose 3. (14 points) Hagrid, the gamekeeper at Hogwarts, has been breeding m

Question

Name lose 3. (14 points) Hagrid, the gamekeeper at Hogwarts, has been breeding magical creatures for his care of magical creatures class. A true-breeding white feathered female owl with green eyes was crossed to a true-breeding brown owl with blue eye The F1 male owls were brown with green eyes while the F1 females were brown wit green and blue spotted eyes. When the F1 owls were crossed the following results a obtained F2 Owls Males Females total Golden. Blue eyes | 1 2.xoy | 0 Golden, Green eyes | 1a20-y.1 Golden, Spotted 0 eyes Brown, Blue eyes 3 S /10 Brown Green eyes | 3G-)ry.3 Brown, Spotted eyes total aa Xoyo | 1 aay4 2 3, 13 G_y®6 0 16 a. How is feather color inherited? (1 points) b. How is eye color inherited? (1 points) c. Place the genotypes Define your alleles below. for each phenotype in the boxes above. (8 points) Phenotype Brown Feathers Golden Feathersao Blue Eyes Green Eyes yYY allele gold as Spotted eyes >twgh no occurrence hane d. Explain why some owls have spotted blue and green eyes (4 points)

Explanation / Answer

d. The type of inheritance of eye color is not only linked to sex (X-linked), but also there is CODOMINANCE (X-linked codominant) between the alleles in charge of the pigmentation of the eye's iris (for blue and green eyes). In other words, due to the codominance between allele B (for green) and allele b (for blue), when both alleles are present both colors will be expressed, as both alleles are dominant. As their inheritance is also X-linked, no male will have spotted blue and green eyes, as the alleles for eye color are located in the X chromosomes, and males only have one X chromosome, while the other one is Y, so they can only be blue-eyed (XbY) or green-eyed (XBY).

In summary, codominance between the alleles that give pigmentation to the eye's iris (B and b) is the cause of the spotted blue and green eyes

Related Questions

Navigate

• Browse (All)
• Browse N
• Subjects

---

---

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