Species and Taxonomy

Question 1

Define classification

Answer 1

The organisation of living organisms into groups

Question 2

Define taxonomy

Answer 2

The study if classification

Question 3

Define species

Answer 3

A group of similar organisms that can breed together to produce fertile offsprings

Question 4

What do courtship behaviour help animals to achieve

Answer 4

1. Recognise members if their own species
2. Recognise opposite genders
3. Identify a mate capable of breeding
4. Form a pair bond
5. Synchronise mating
6. Stimulates release of gametes

Question 5

What is the taxon order

Answer 5

. Domain
. Kingdom
. Phylum
. Class
. Order
. Family
. Genus
. Species

Question 6

Define hierarchy

Answer 6

Groups within groups, no overlap

Question 7

Define phylogeny

Answer 7

The study of the evolutionary relationships between species

Question 8

Define phylogenetic group

Answer 8

Evolutionary links/ history / relationships / common ancestors

Question 9

How can we determine the evolutionary relationships of species

Answer 9

1. Comparing the frequency of observable characteristics
2. Comparing the base sequence of DNA
3. Comparing the base sequence of mRNA
4. Amino acid sequence of certain proteins can be compared between different species

Question 10

Describe DNA hybridisation

Answer 10

Pair two strands of the same gene from two different organisms together. If they are closely related, the sequence of bases will be very simular, so more complementary paring so more H bonds will form. Therefore takes a higher temperature to break these extra bonds