7. (comprehension) Hair texture in humans is inherited through incomplete domina

Question

7. (comprehension) Hair texture in humans is inherited through incomplete dominance, providing the option for three hair textures: straight, curly, or wavy. If an individual with wavy hair marries an individual with straight hair, what phenotypic ratio would you predict for their offspring? b, c. d, e, 75% straight: 25% wavy 25% curly: 25% wavy: 25% straight 25% straight: 50% wavy : 25% curly 50% wavy : 50% straight 25% straight: 50% curly: 25% wavy 8. (recall) If a person inherits two X chromosomes, that person will be: c. a male a. a female b. color blind d. sterile e. none of the choices (a-d) are correct

Explanation / Answer

7)In the question, it is not provided if the parents are homozygous or heterozygous.

Considering that a homozygous wavy hair marries an individual with straight hair, the F1 offspring will be all curly hair.

When the F1 offspring are crossed, then 25% straight, 50 % curly and 25% wavy offsprings are produced.

Parents- ss( wavy hair) X SS (straight hair)

F1 Ss (curly hair)

F1 * F1 Ss * Ss

F2 progeny 1 SS : 2   Ss: 1 ss

phenotypes straight : curly : wavy hair

So the answer is 25% straight, 50 % curly and 25% wavy offsprings

8) If a person inherits 2 X chromosomes, then the person will be a female. If a person has a Y chromosome along with X than the person is a male.

Related Questions

Navigate

• Browse (All)
• Browse 7
• Subjects

---

---

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