Applied Lectures

Question 1

Definition of Lactose Intolerance

Answer 1

a person is unable to digest lactose

Question 2

Symptoms of Lactose Intolerance

Answer 2

• stomach aches
• gas
• cramps
• bloating

Question 3

Galactosemia

Answer 3

individual lacks the enzyme that converts galactose into glucose

Question 4

Cystic Fibrosis

Answer 4

• genetic disorder that causes mucus in the lungs
• occurs because of the deletion of the amino acid phenylalanine
• occurs because of mutations in the CTFR

Question 5

Retinoblastoma

Answer 5

• disruption of Rb protein
• fails to serve as a cell cycle break
• abnormal cell division grows very fast

Question 6

Androgen Insensitivity

Answer 6

-mutation that changes the nucleotide sequence of a single gene, causing a single type defective protein to be produced

Question 7

CTFR

Answer 7

-transports Cl- ions into and out of the cell, which helps control the movement of water resulting in thin free flowing mucus

Question 8

Mytilus

Answer 8

• clings to rocks and is resistant to the pounding water

- have keratin and other proteins that act as an adhesive known as bosses

Question 9

Spirit Bears

Answer 9

mutation in the MC1R gene which encodes for a protein responsible for regulating skin and hair colour in mammals

Question 10

Bird Sex Chromosomes

Answer 10

• sex determination controlled through dosage of DMRT1 gene

- two sexes are caused by an imbalance of the dosages

Question 11

Geckos Sex Chromosomes

Answer 11

-temperature influences what sex an animal is

Question 12

Xenopus

Answer 12

-DM-W is the master female sex regulator detected in many xenopus