The doctor says that Lydia’s baby has a disorder caused by one single gene. What does the baby MOST likely have? (1 point) Responses arthritis arthritis cystic fibrosis cystic fibrosis heart disease heart disease diabetes
cystic fibrosis
Based on the information provided, the baby is most likely to have cystic fibrosis.
To determine what disorder Lydia's baby most likely has, we need to understand the concept of single gene disorders or Mendelian disorders. These disorders are caused by mutations in a single gene and can be passed down from one generation to another.
To get the answer, we can analyze each option given and identify if they are single gene disorders.
1. Arthritis: Arthritis is a general term for joint inflammation, and it is not primarily caused by a single gene mutation. It is more commonly influenced by various factors like age, lifestyle, and immune system issues. Therefore, arthritis is less likely to be caused by a single gene disorder.
2. Cystic fibrosis: Cystic fibrosis is a genetic disorder caused by a mutation in the CFTR gene. This mutation affects the production of a protein that controls the movement of salt and water in and out of cells. Since cystic fibrosis is caused by a single gene mutation, it is a likely candidate as the disorder mentioned by the doctor.
3. Heart disease: Heart disease is a broad term encompassing various conditions that affect the heart. While genetics can play a role in increasing the risk of developing heart disease, most forms of heart disease are not directly caused by a single gene mutation. Therefore, heart disease is less likely to be caused by a single gene disorder.
4. Diabetes: Diabetes is a metabolic disorder that can be influenced by both genetic and environmental factors. While some forms of diabetes are associated with specific gene mutations, it is more commonly a complex disorder involving the interaction of multiple genes. Therefore, diabetes is less likely to be caused by a single gene disorder.
Based on the analysis, the disorder that Lydia's baby most likely has, considering it is caused by a single gene mutation, is cystic fibrosis.