IB Theoretical genetics

What term describes different forms of the same gene?

(a)  

What process forms new alleles of a gene?

(a)  

What term describes the position occupied on a chromosome by a gene?

(a)  

Which of the statements below is correct?

• There is a correlation between the number of chromosomes and the number of genes

• There is no correlation between the number of chromosomes and the number of genes

• The number of chromosomes a species has can vary

• The DNA in prokaryotes is associated with protein

Glutamic acid is replaced by which amino acid causing sickle cell anaemia?

• Lysine

• Valine

• Methionine

• Glycine

What term describes the whole of the genetic information of an organism?

(a)  

What type of mutation is the cause of sickle cell anaemia?

(a)  

How many genes are there in the human genome?

• 2000

• 21,000

• 210,000

• 2,000,000

What term describes chromosomes with the same sequence of genes and the same structural features?

• Analogous chromosomes

• Homologous chromosomes

• Non sister chromatids

• Autosomes

The Cairns method used which technique to establish the length of bacterial chromosomes and that they are circular?

• PCR

• Freeze-fracture micrography

• Gel electrophoresis

• Autoradiography