Evolutiom

Question 1

Biological species concept is

Answer 1

2 different species when individuals from each population cannot produce fertile offspring
Only certain can breed

Question 2

Morphological species concept

Answer 2

Organism are classified as the same species if they appear identical by morphological criteria

Question 3

Explain allopatric speciation and give some examples

Answer 3

Is the evolution of a new species from an old ancestral species while both inhabit different geographical location such as river, mountains … (geographical barrier)

Question 4

Explain sympathetic speciation and give examples

Answer 4

Evolution of a new species from a surging ancestral species while both the same geographical location examples include behavioural, temporal (different breeding seasons), habitat isolation or genetic incompatibility

Question 5

What is Co evolution and an example

Answer 5

When 2 species affect each other’s evolution example a birds breeding season and flowers blooming times happen at the same time

Question 6

Adaptive radiation

Answer 6

Fast evolution of many species from a single ancestor

Question 7

Divergent evolution

Answer 7

Share a common ancestor but evolve into a different species ex. Dog wolf fox

Question 8

Convent evolution

Answer 8

2 or more distinct species share a common trait not due to common ancestor ex. Birds bat and butterfly
They have wings that help them fly but they don’t share a common ancestor
They evolve to have wings independently r

Question 9

Homologous structure

Answer 9

Similar structure but differing function Comes from common ancestor

Question 10

Analogies structures and examples

Answer 10

Similar in function but differ in structure not from common ancestor
ex. Birds, bat and insect wings
Each wing similar in function and external appearance because wings five advantage of flight however they are all internally different because they all evolve from different ancestors

Question 11

What Are trace fossils

Answer 11

Non body remains such as footprints, moles cast…

Question 12

Relative dating can

Answer 12

Tell us how old earths layer are relative to each other

Question 13

Absolute dating

Answer 13

Finds outs the exact age of rock layers

Question 14

Radioactive decay happens

Answer 14

An unstable parent isotope decays into a stable daughter isotope

Question 15

Radiometric dating is

Answer 15

Process of determining the absolute age of a sample

Question 16

What structure shows evidence of a common ancestors?

Answer 16

Homologous strictures

Question 17

What structures do no show common ancestry

Answer 17

Analogous structure

Question 18

What are vestigial structures

Answer 18

Useless structures like human wisdom teeth for example

Question 19

Genetic drift

Answer 19

Evolution by chance