Concept Of Species

Question 1

5 concepts?

Answer 1

1. Phylogenetic
2. Ecological
3. Morphological
4. Genetic
5. Biological

Question 2

Biological is divided into?

Answer 2

Prezygotic physiological behaviours

And

Post-zygotic

Question 3

Describe biological concept

Answer 3

Each species has a gene pool separate from that of other species;

Has reproductive barrier;
-> cannot interbreed

**emphasis absence of gene flow

Question 4

Define ecological concept

Answer 4

A group of organisms sharing the same ecological niche;

Niche is the function or position of a species within an ecological community

Question 5

Explain morphological concept

Answer 5

Body shape, size and other struct features;

Do not reproduce sexually

Question 6

Explain genetics species

Answer 6

Genetically distinct gp of natural populations that share a common gene pool;

Genetically compatible interbreeding natural population that is genetically isolated from other gp;

Nucleotide diff;

Question 7

Genetic concept focus on?

Answer 7

Genetic isolation;

Gene loci; chromosome no; chromosome struct’

Question 8

Phylogenetic concept?

Answer 8

Shared evolutionary ancestry

Question 9

Prezygotic mechanism is to?

Answer 9

Prevent the formation of hybrid zygotes

Question 10

Prezygotic includes?

Answer 10

Behaviour isolation;
-mutual attraction bt the sexes us weak;

Gametic isolation;
-Gana yes may be inviable reproductive tract of opp sex

Question 11

Adaptive radiation

Answer 11

Evolution of many diversely adapted species from a common ancestor

Question 12

What is sympatric speciation?

Answer 12

Intrinsic factors;

Chromosomal changes; non random mating;

Alter gene flow;

Genetically isolated