In the fruit fly D. virilis, the mutations dusky body color (dy), cut wings (ct)

Question

In the fruit fly D. virilis, the mutations dusky body color (dy), cut wings (ct), and white eyes (w) are all recessive alleles located on the X chromosome. Females heterozygous for all three mutations were crossed to dy ct w males, and the following phenotypes were observed among the 500 offspring. wildtype 18 dusky 153 cut 6 white 76 cut, white 150 dusky, cut 72 dusky, cut, white22 dusky, white 3 14) What are the genotypes of the two maternal X chromosomes, with the genes in the correct order? a) dy + w / + ct b) dy + + / + w ct c) dy w + / + ct d) dy w ct / + + + e) + ct + / dy + w 15) What is the recombination frequency between dusky and white? a) 148/500 b) 46/500 c) 43/500 d) 49/500 e) 40/500 16) When does crossing In the fruit fly D. virilis, the mutations dusky body color (dy), cut wings (ct), and white eyes (w) are all recessive alleles located on the X chromosome. Females heterozygous for all three mutations were crossed to dy ct w males, and the following phenotypes were observed among the 500 offspring. wildtype 18 dusky 153 cut 6 white 76 cut, white 150 dusky, cut 72 dusky, cut, white22 dusky, white 3 14) What are the genotypes of the two maternal X chromosomes, with the genes in the correct order? a) dy + w / + ct b) dy + + / + w ct c) dy w + / + ct d) dy w ct / + + + e) + ct + / dy + w 15) What is the recombination frequency between dusky and white? a) 148/500 b) 46/500 c) 43/500 d) 49/500 e) 40/500 16) When does crossing In the fruit fly D. virilis, the mutations dusky body color (dy), cut wings (ct), and white eyes (w) are all recessive alleles located on the X chromosome. Females heterozygous for all three mutations were crossed to dy ct w males, and the following phenotypes were observed among the 500 offspring. wildtype 18 dusky 153 cut 6 white 76 cut, white 150 dusky, cut 72 dusky, cut, white22 dusky, white 3 14) What are the genotypes of the two maternal X chromosomes, with the genes in the correct order? a) dy + w / + ct b) dy + + / + w ct c) dy w + / + ct d) dy w ct / + + + e) + ct + / dy + w 15) What is the recombination frequency between dusky and white? a) 148/500 b) 46/500 c) 43/500 d) 49/500 e) 40/500 16) When does crossing

Explanation / Answer

1) B

2) A

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

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