Chapter 10.2, Problem 2CYP

Summary Introduction

To explain:

The reason for the possibility of the production of a child that has cystic fibrosis, while none of its parents displays phenotype of cystic fibrosis.

Introduction:

A mutation in a gene on one of the autosomal (22 non sex pairs) chromosomes leads to an autosomal disorder. An autosomal recessive disorder means two copies of mutated gene must be present for development of a disease or disorder. Cystic fibrosis is an example of autosomal recessive disorder.

Pictorial representation:

Fig 1: Cross between the parents who has heterozygous trait for cystic fibrosis.

Fig 1: Cross between the parents who has heterozygous trait for cystic fibrosis.