Species defintions and applications

Question 1

morphological species concept

Answer 1

a group of organisms are classified in the same species if they appear identical by morphological criteria

Question 2

Molecular species concept

Answer 2

a group of organisms are classified in the same species if they appear identical in DNA sequences

Question 3

Biological species concept

Answer 3

speices are groups of actually or potentially interbreeding natural populations, which are reproductively isolated from other such groups

Question 4

what is the problem with low geneti diversity in species conservation

Answer 4

low levels of genetic variation decreases the likelihood of a species properly adapting to new environmental changes resulting in a decreased chance of survival ; low genetic diversity can also lead to the march to homozygosity