Sickle cell anemia is an inherited disease in which red blood cells become distorted and deprived of oxygen. A person with two sickle cell genes will have the disease, but a person with only one sickle cell gene will have a mild, nonfatal anemia called sickle cell trait. If we use s to represent a sickle cell gene, and S a healthy gene, the table shows the four possibilities for the children of one healthy, SS parent, and one parent with sicke cell trait, Ss. Find the probability that these parents give birth to a child who has sickle cell anemia. S Healthy First Parent S Second Parent (with Sickle Cell Trait) S S Ss Ss SS SS The probability that the parents give birth to a child who has sickle cell anemia = (Type an integer or a simplified fraction.)

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
icon
Related questions
Question
Sickle cell anemia is an inherited disease in which red blood cells become distorted and deprived of oxygen. A person with two sickle cell genes will have the disease, but a person with only one sickle cell gene will have a mild, nonfatal anemia called sickle cell trait. If we use "s" to represent a sickle cell gene, and "S" a healthy gene, the table shows the four possibilities for the children of one healthy, SS parent, and one parent with sickle cell trait, Ss. Find the probability that these parents give birth to a child who has sickle cell anemia.

The table is a Punnett square illustrating the genetic combinations:

- **Healthy First Parent (SS):**
  - Against "S" from the second parent results in "SS"
  - Against "s" from the second parent results in "Ss"

- **Second Parent (with Sickle Cell Trait, Ss):**
  - Against "S" from the first parent results in "SS"
  - Against "s" from the first parent results in "Ss"

**Table Details:**
- Top row: Second Parent's alleles (S, s)
- Side column: Healthy First Parent's alleles (S)
- Outcomes: SS, Ss, SS, Ss
- None of the combinations result in "ss," which would cause sickle cell anemia.

The probability that the parents give birth to a child who has sickle cell anemia is 0, as none of the genetic combinations "SS" or "Ss" result in "ss" (the required combination for sickle cell anemia).
Transcribed Image Text:Sickle cell anemia is an inherited disease in which red blood cells become distorted and deprived of oxygen. A person with two sickle cell genes will have the disease, but a person with only one sickle cell gene will have a mild, nonfatal anemia called sickle cell trait. If we use "s" to represent a sickle cell gene, and "S" a healthy gene, the table shows the four possibilities for the children of one healthy, SS parent, and one parent with sickle cell trait, Ss. Find the probability that these parents give birth to a child who has sickle cell anemia. The table is a Punnett square illustrating the genetic combinations: - **Healthy First Parent (SS):** - Against "S" from the second parent results in "SS" - Against "s" from the second parent results in "Ss" - **Second Parent (with Sickle Cell Trait, Ss):** - Against "S" from the first parent results in "SS" - Against "s" from the first parent results in "Ss" **Table Details:** - Top row: Second Parent's alleles (S, s) - Side column: Healthy First Parent's alleles (S) - Outcomes: SS, Ss, SS, Ss - None of the combinations result in "ss," which would cause sickle cell anemia. The probability that the parents give birth to a child who has sickle cell anemia is 0, as none of the genetic combinations "SS" or "Ss" result in "ss" (the required combination for sickle cell anemia).
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Similar questions
Recommended textbooks for you
A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON
A First Course in Probability
A First Course in Probability
Probability
ISBN:
9780321794772
Author:
Sheldon Ross
Publisher:
PEARSON