Week 6- Evolution and Species

Question 1

To consider living organisms as members of different species, we must consider ____

Answer 1

The magnitude and types of differences individuals have

Question 2

It is a working definition of a species and/or a methodology for determining whether or not two organisms are members of the same species.

Answer 2

Species concept

Question 3

Types of species concept

Answer 3

-Typological/Morphological Species Concept
-Nominalist Species Concept
-Biological Species Concept
-Evolutionary Species Concept

Question 4

This type of species concept do not exhibit any relationship with each other.

Answer 4

Typological/Morphological Species Concept

Question 5

There is a finite number of varieties of living organisms that exist on earth in this concept.

Answer 5

Typological/Morphological Species Concept

Question 6

Typological/Morphological Species Concept is depicted by _____ and _____ in their philosophies.

Answer 6

Aristotle and Plato

Question 7

It is a concept that states that species cab be differentiated from other species by their physical features, which was formulated by Cain (1954, 1956)

Answer 7

Morphospecies concept or morphological species concept

Question 8

It is a belief that nature only produces individuals.

Answer 8

Nominalistic Species Concept

Question 9

These concepts do not have any scientific basis.

Answer 9

Nominalistic Species Concept

Question 10

It believes that the species have been invented to be referred to big numbers of individuals jointly.

Answer 10

Nominalistic Species Concept

Question 11

It defines species as a group of interbreeding natural population.

Answer 11

Biological Species Concept

Question 12

Members of species exhibit the following attributes:

Answer 12

*Reproductive community (recognize one another as potential mates)
*Ecological Unit (all the members cooperatively form a unit)
*Genetical Unit (comprises a large, inter-communicating gene pool)

Question 13

The flaws to the biological species concept had led the paleontologists to formulate this concept.

Answer 13

Evolutionary Species Concept

Question 14

____ defined in 1961 that an evolutionat species is a lineage evolving seperately from others.

Answer 14

Simpson

Question 15

___ stated that an evolutionary species are a single lineage of ancestral-descendant population

Answer 15

Wiley (1978)

Question 16

Here, reproductive barriers prevent the two species from exchanging genes through reproduction.

Answer 16

Reproductive Isolation

Question 17

It means two individuals are prevented from successful reproduction and kept genetically distinct from each other.

Answer 17

Reproductive Isolation

Question 18

Two individuals are unable to mate as they live in geographically different areas.

Answer 18

Ecological Isolation

Question 19

Mating is prevented because the reproductive organs are mature at different times.

Answer 19

Seasonal Isolation

Question 20

Two species are so different that one female individual is able to recognize only the male of its species.

Answer 20

Ethological/Behavioral Isolation

Question 21

The male and female organs for mating differ in different species and orevent their union.

Answer 21

Mechanical Isolation

Question 22

The sperms of one species are not able to survive in the female tract of another species.

Answer 22

Physiological Isolation

Question 23

If a zygote formed from different species is performed, it will die after some time or die in its development.

Answer 23

Zygotic and Developmental

Question 24

A hybrid or a zygote formed from different species may lead to a normal life but cannot reproduce.

Answer 24

Hybrid Sterility

Question 25

In rare cases, all above mechanisms fail and a hybrid is fertile. It can only produce one generation.

Answer 25

F2 Breakdown