#14 Big Fat Genetics Review

Front

What is a photograph of human chromosomes that may be studied to determine possible genetic disorders known as?

Back

A karyotype.

Front

What chromosome abnormality results in Down syndrome?

Back

Down syndrome is caused by an extra copy of chromosome 21.

Front

Which statement is part of the gene-chromosome theory?

Back

Alleles governing the same trait are found on homologous chromosomes.

Front

What does a single gene mutation result from?

Back

A change in a base sequence in DNA.

Front

What is a chromosome mutation known as a deletion?

Back

A deletion is when a part of a chromosome is missing.

Front

What is the function of chromosomes in cells?

Back

Chromosomes carry genetic information in the form of genes.

Front

What is the difference between mitosis and meiosis?

Back

Mitosis results in two identical daughter cells, while meiosis results in four genetically diverse gametes.

Front

What is a pedigree chart used for?

Back

A pedigree chart is used to track the inheritance of traits across generations.

Front

What is the role of alleles in genetics?

Back

Alleles are different versions of a gene that determine specific traits.

Front

What is phenylketonuria (PKU)?

Back

PKU is a genetic disorder caused by a mutation in the gene that helps create the enzyme needed to break down phenylalanine.