Classification

Question 1

What is taxonomy?

Answer 1

Classifying living organisms based on similarities and differences in to groups.

Question 2

What is phylogeny?

Answer 2

Evolutionary history of relationships between groups of organisms based on genetic evidence.

Question 3

What is a heirarchy?

Answer 3

Groups are divided into smaller groups which do not overlap based on physical appearence.

Question 4

How can phylogeny show genetic relationships?

Answer 4

-Can see points of divergence- when a species divide into two.
-based on biochemical evidence (DNA,RNA)

Question 5

What are the three domains?

Answer 5

Eukarya, bacteria and archaea.

Question 6

What is the order of taxomony?

Answer 6

Domain
Kingdom
Phylum
Class
Family
Genus
Species

Question 7

What is a species?

Answer 7

Group of similar organisms that can be interbred to produce fertile offspring.

Question 8

What is the binomial naming system?

Answer 8

-Name by using genus then species name.

Question 9

What are the 4 classification methods?

Answer 9

-DNA comparison
-mRNA sequence comparison
-Ammino acid sequence comparison
-Immunological comparisons.

Question 10

How is base sequencing comparison done?

Answer 10

-Stretches of DNA are determined by sequencing.
-The more differences the less related 2 species are.

Question 11

What is the difference between DNA sequencing and mRNA sequencing?

Answer 11

DNA uses thymine mRNA uses uracil.

Question 12

What is DNA hydridisation?

Answer 12

-Determines similarity between species.
-DNA separates with heat.
-All stands pair back up to form hybrid DNA.
-Then heated again.
-High the denaturing temperature the more similar the DNA is ad more hydrogen bonds between complementary bases.