17.3

Question 1

What plant did biologists think Maize originated from?

Answer 1

Teosinte

Question 2

What with a cross of teosinte could have produced Maize?

Answer 2

Gamagrass (Tripsacum sp)

Question 3

What are the two chemicals that are found in rapeseed oil?

Answer 3

Euric acid and glucosinolates

Question 4

What is canola high in?

Answer 4

Monosaturated and Polyunsaturated fats

Question 5

What are monosaturated and polyunsaturated fats in canola good for?

Answer 5

Decrease the likelihood of plaque forming deposits in the arteries.

Question 6

What is a pedigree?

Answer 6

A flow chart that uses symbols to show the patterns of relationships and traits in a family over many generations

Question 7

What are autosomes?

Answer 7

Any other chromosome other than the sex chromosome?

Question 8

What is autosomal inheritance?

Answer 8

Refers to any traits - dominant or recessive - are coded for by genes on autosomes

Question 9

What is polydactly?

Answer 9

When one has excess fingers and toes

Question 10

Is polydactyl an autosomal dominant or recessive condition?

Answer 10

dominant

Question 11

Is Huningtons disease autosomal dominant or recessive?

Answer 11

Autosomal dominant

Question 12

What is Huningtons disease and its symptoms?

Answer 12

When the brain detoriates over the span of 1.5years
* Memory loss, involuntary muscle movements

Question 13

Is Marfan syndrome autsomal dominant or recessive?

Answer 13

Autsomal dominant

Question 14

What is Marfan syndrome and its symptoms?

Answer 14

Impairment of the connective tissue
* Long bones, curved spine, glaucoma, respitory problems, retinal detachment

Question 15

Is Phenylketonuria autosomal dominant or recessive?

Answer 15

Autosomal recessive

Question 16

What is Phenylketonuria and what are its symptoms?

Answer 16

Occurs when the enzyme that converts phenylamine into tyrosine is defective or absent - phenylene then is converted to phenyl pyruvic avid - build up to toxic levels

Question 17

What does tyrosine do?

Answer 17

Used by the body to make melatonin and certain hormones

Question 18

What happens if a baby is not diagnosed or treated of PKU on time?

Answer 18

They will become handicapped within a few months

Question 19

What is cystic fibrosis and what are its symptoms?

Answer 19

The build of of thick mucus in the lungs and in the digestive stem
* premia, reparatory problems, trouble digesting foods

Question 20

Is cystic fibrosis an autosomal recessive trait or an autosomal dominant trait?

Answer 20

Autosomal recessive

Question 21

What is haemophilia?

Answer 21

When the proteins that are involved in blood clotting are impaired - people who are cut undergo serious blood loss

Question 22

Are men or females at higher risk of hemophilia?

Answer 22

Men

Question 23

What are three X linked recessive traits?

Answer 23

• Hemophilia
• Color blindness
• Duchenne muscular dystrophy

Question 24

What happens to individuals with Duchenne muscular dystrophy?

Answer 24

They cannot manufacture the protein dystrophin
* Muscles will weaken and degenerate over time

Question 25

What are the four “inborn errors in metabolism”

Answer 25

• Alkaptonuria
• Albinism
• Cystinuria
• Pentosuria

Question 26

Who is the English Physician who wrote a book on the inborn errors in metabolism?

Answer 26

Sir Archibald Garrid

Question 27

What caused the “inborn errors of metabolism?

Answer 27

Absence of specific enzymes

Question 28

What is genetic screening?

Answer 28

Using chromosome mapping to identify people who are at risk of developing particular genetic conditions or of passing these conditions to their children.

Question 29

What is Alkaptonuria?

Answer 29

When individuals produce black urine

Question 30

What is Albinism?

Answer 30

The lack of the skin pigment melanin