NSC Life Sciences Genetics and Inheritance: If 2000 dogs were studied in thi

Question

If 2000 dogs were studied in this investigation, how many dogs had disorders that were caused by autosomal dominant inheritance? Show ALL calculations.

If 71% of the disorders are autosomal recessive, that means the remaining disorders, which account for 29%, are either autosomal dominant or sex-linked.

Given that sex-linked disorders make up 10%, it follows that the percentage of autosomal dominant disorders is:

$$29\% - 10\% = 19\%$$

To calculate the number of dogs that had disorders caused by autosomal dominant inheritance:

$$\frac{19}{100} 	imes 2000 = 380$$

Therefore, 380 dogs had disorders caused by autosomal dominant inheritance.

If 2000 dogs were studied in this investigation, how many dogs had disorders that were caused by autosomal dominant inheritance? Show ALL calculations - NSC Life Sciences - Question 2 - 2016 - Paper 2

Worked Solution & Example Answer:If 2000 dogs were studied in this investigation, how many dogs had disorders that were caused by autosomal dominant inheritance? Show ALL calculations - NSC Life Sciences - Question 2 - 2016 - Paper 2

Determine the autosomal dominant percentage

Perform the calculation to find the number of dogs

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