3.4- Chapter 8- DNA, genes and protein synthesis

Question 1

What is biodiversity reflected by?

Answer 1

Biodiversity is reflected in the vast numbers of species of organisms, in the variation of individual characteristics within a certain species and in the variation of cell types within the single multicellular organism.

Question 2

What are differences between species/ individuals caused by?

Answer 2

• Differences between species reflect genetic differences
• Differences between individuals within species could be the result of genetic/ environmental factors.

Question 3

What do changes in base sequences do?

Answer 3

• Changes in base sequenxes produce a new allele of that gene- mutation.
• This results in different sequence of amino acids, polypetides and protiens, with different primary and tertiary structure.
• Sometimes this means the protein won’t function properly or at all e.g., enzymes.