3.4.7 Investigating Biodiversity

Question 1

Name 4 ways in which we can measure genetic diversity between organisms

Answer 1

1) The frequency of measurable or observational characteristics
2) Base sequence of DNA
3) base sequence of mRNA
4) Amino acid sequence of the proteins encoded by DNA and mRNA.

Question 2

What is gene technology?

Answer 2

Sampling DNA or mRNA in order to read and compare the base sequences of organisms
Amino acid sequence will also provide information on the organisms mRNA and DNA sequences.

Question 3

Why do scientist prefer using gene technology instead of observation?

Answer 3

using only Observation of characteristics is not reliable:

• could be coded for by more than one gene
• could be influenced by the environment

Question 4

What is meant by interspecific and intraspecific?

Answer 4

Interspecific= difference between individuals of difference species
Intraspecific= difference between individuals of the same species.

Question 5

What is sampling?

Answer 5

Selecting a group of individuals to measure that will represent the whole population

Question 6

How can a random sample be achieved?

Answer 6

Create a grid for your sample area
Generate random co-ordinates
place quadrat/transect
Repeat until required sample size is reached