Pedigrees

Front

What genotype would make a person UNAFFECTED if a trait is AUTOSOMAL DOMINANT?

Back

aa

Front

In a pedigree, what do circles represent?

Back

Females

Front

If a trait is X-LINKED RECESSIVE, what is the status of a person with the genotype 'X^aY'?

Back

Affected

Front

In a pedigree, how is a person AFFECTED by a trait represented?

Back

Shaded

Front

What genotype would make a person AFFECTED if a trait is AUTOSOMAL RECESSIVE?

Back

aa

Front

What does a shaded shape in a pedigree indicate?

Back

The individual is affected by the trait.

Front

What does an unshaded shape in a pedigree indicate?

Back

The individual is unaffected by the trait.

Front

What is the significance of the genotype 'X^AY' in X-LINKED traits?

Back

The individual is unaffected by the X-linked recessive trait.

Front

What does the term 'pedigree' refer to in genetics?

Back

A diagram that shows the occurrence of a genetic trait across generations.

Front

What is the difference between AUTOSOMAL DOMINANT and AUTOSOMAL RECESSIVE traits?

Back

Autosomal dominant traits require only one copy of the dominant allele to be expressed, while autosomal recessive traits require two copies of the recessive allele.