RECCESSIVE GENETIC DISORDERS

Which disorder is treated by restricting milk in the diet?

• phenylketonuria

• cystic fibrosis

• galactosemia

• Tay-Sachs disease

Which disorder is characterized by degradation of the nervous system and usually results in death during infancy?

• Tay-Sachs
• Cystic fibrosis
• Huntington's
• PKU

Both parents have to carry the cystic fibrosis allele for you to inherit the disease

• True

• False

What is the genotype of the mother?

• BB
• bb
• Bb
• BB or Bb

What is the genotype of the father?

• AA
• aa
• Aa
• AA or aa

The protein that protects people's skin from UV rays is called...

• Melatonin

• Melanin

• Melanoma

• Mallow

Galactosemia is caused by what?

• The gene that codes for a membrane protein is defective.

• Genes do not produce normal amounts of the pigment melanin.

• Absence of the gene that codes for the enzyme that breaks down galactose.

• Absence of a necessary enzyme that breaks down fatty substances.

What is the cause for Tay-Sachs Disease?

• The gene that codes for a membrane protein is defective.

• Genes do not produce normal amounts of the pigment melanin.

• Absence of the gene that codes for the enzyme that breaks down galactose.

• Absence of a necessary enzyme that breaks down fatty substances.

Mark the effects of Cystic Fibrosis:

• Excessive mucus production

• Enlarged liver

• Vision problems

• Digestive and respiratory failure

• Mental disabilities

Mark the effects of Albinism:

• Mental disabilities

• No color in the skin, eyes, and hair

• Skin susceptible to UV damage

• Vision problems

• Enlarged liver