zoology lect 1

Question 1

Name Darwins theory of evolution.

Answer 1

1) Perpetual change 2) common descent 3) multiplication of species 4) gradualism 5) natural selection

Question 2

Define perpetual change

Answer 2

characteristics of organism undergo modification across generations time

Question 3

Define common descent

Answer 3

all forms of life propagated from a common ancestor through a branching of lineages

Question 4

Define multiplication of species

Answer 4

evolution produces new species by splitting and transforming older ones
Fully formed species propagate as separate evolutionary lineage.

Question 5

Define Gradualism

Answer 5

Large differences in traits characterizing different species originate by accumulation of small incremental changes over very long periods of time.
Small rather than large changes (usually harmful)

Question 6

Natural selection

Answer 6

Organism are structured to meet the demand of their environment (adaptation)
populations accumulate favourable characteristics throughout time. (advantageous trait is pass on)