A couple has three children : a 14 - year -old daughter and two sons that are 12 and 10 years old.If the mother and daughter are both known to have a genetic disorder what would the the Pedigree of this family look like?

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Answer

To create a pedigree chart for the family described in the question, we will follow these steps:

### Step 1: Identify the Family Members
- The family consists of a couple (husband and wife) and their three children: one daughter and two sons.
- The daughter is 14 years old, the sons are 12 and 10 years old.

### Step 2: Represent the Family in a Pedigree Chart
- In a pedigree chart, males are represented by squares and females by circles.
- The couple will be represented by one square (male) and one circle (female).

### Step 3: Indicate the Children
- The couple has three children:
- The daughter (14 years old) will be represented by a circle.
- The first son (12 years old) will be represented by a square.
- The second son (10 years old) will also be represented by a square.

### Step 4: Indicate the Genetic Disorder
- It is given that both the mother and daughter have a genetic disorder.
- In pedigree charts, individuals with a genetic disorder are typically shaded or marked in some way.
- Therefore, the mother (circle) and the daughter (circle) will be shaded to indicate they have the genetic disorder.
- The sons will remain unshaded since there is no indication that they have the disorder.

### Step 5: Finalize the Pedigree Chart
- The final pedigree chart will show:
- A shaded circle for the mother.
- A shaded circle for the daughter.
- Unshaded squares for both sons.
- The connections will show the couple at the top, with lines connecting to their three children below.