Chapter 25 Words

Question 1

Adaptive radiation

Answer 1

Where a single ancestral species has evolved into a wide array of descendent species that differ in their habitat, form, or behavior

Question 2

Allopatric speciation

Answer 2

When a population becomes isolated from other populations and evolves into one or more species

Question 3

Anagenesis

Answer 3

One species splits into a new species

Question 4

Biological species concept

Answer 4

Species is group of individuals whose members have the potential to interbreed with one another in nature to produce viable, fertile offspring

Question 5

Cladogensis

Answer 5

When a species diverges into Two or more new species

Question 6

Evo-devo

Answer 6

Compares the development of different organisms in an attempt to understand ancestral species between organisms and the mechanisms that bring about evolutionary change

Question 7

Hox genes

Answer 7

Homeotic genes which specify the fate of a particular segment or region of the body

Question 8

What does variation of hox genes promote?

Answer 8

Spawned formation of new body patterns …

Increase in number of hox genes have been instrumental in evolution of species and forming greater complexity in body structure

Question 9

Evolutionary lineage species concept

Answer 9

Lineage is a series of species thag forms a line of descent, with each new species the direct result of speciation from an immediate ancestral species

Question 10

Polyploidy

Answer 10

Which an organism has more than two sets of chromosomes

Question 11

Alloploid

Answer 11

Organism contains at least one set of chromosomes from Two or more different species

Question 12

Sympatric speciation

Answer 12

When members of a species that are within the same range diverge into two or more different species even though there are no physical barriers to interbreeding

Question 13

Species

Answer 13

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