Speciation

Question 1

What is the formation of ___ and ___ species in the course of evolution?

Answer 1

Speciation; new and distinct

Question 2

Unbroken sequence of species from ancestor to descendant

Answer 2

Phyletic evolution

Question 3

Species evolve to replace its ancestor and its evolution is a linear descent without branches

Answer 3

Anagenesis

Question 4

Branching evolution; when a parent species gives rise to two or more descendant species which forms a smaller clade.

Answer 4

Cladogenesis

Question 5

Genetic divergence between gene transfer between two populations

Answer 5

Allopatric Speciation

Question 6

___ is the ___ step in allopatric speciation, either ___ isolation or ___ intervention

Answer 6

Isolation; first; geographic; artificial

Question 7

Geographically overlapping populations that have genetic variations when biological factors (ex. chromosomal changes) reduce gene flow

Answer 7

Sympatric Speciation

Question 8

Multiple species variation in a population due to high adaptive value; insects that possess polymorphisms for color which can be advantageous

Answer 8

Balanced polymorphisms

Question 9

Heritable condition of a species having more than two complete sets of chromosomes

Answer 9

Polyploidy

Question 10

Polypoidy leads to speciation through ___ ___ which occurs when there is a meiotic error that results in a ___ gamete

Answer 10

chromosomal nondisjunction; diploid

Question 11

females would only mate with their preference and no other males

Answer 11

Selective Mating

Question 12

Change of preference throughout time

Answer 12

Temporal isolation

Question 13

Certain geographic feature has its own variation; occurs when there is an incomplete geographical barrier between species; also known as ___ species

Answer 13

Parapatric Speciation; ring

Question 14

Area where 2 sub populations overlap creating a hybrid

Answer 14

Zone of hybridization