Lecture 4

Question 1

What is a polypeptide?

Answer 1

chain of amino acids

Question 2

A protein

Answer 2

made up of one or more polypeptide molecules

Question 3

Chromosomes require three elements to function…

Answer 3

Telomeres (structural stability)
Centromeres (essential for segregation at cell division)
origins of replication

Question 4

Ploidy
Karyotype
Autosomes

Aneuploidy

Euploidy

Answer 4

= sets of chromosomes
= sorted chromosomes
= chromosomes not involved in determining sex of organism
= Extra chromosomes but not a set
= extra set of chromosome

Question 5

Testing carried out in pregnancy

Answer 5

Pre-implanation diagnosis (PID)
Ultrasound
Triple test of maternal blood
Naternal blood for cf DNA of the fetus
Chorionic villus sampling
Amniocenesis