Ch. 15 Part 3

Question 1

homology

Answer 1

characteristic shared by diff organisms with common ancestry

Question 2

convergent evolution

Answer 2

similarities not due to common ancestry
 Plants of diff ancestry adapted in similar ways to common environments
 Examples: cactus and Euphorbia, both adapted to arid habitats

Question 3

evidence for evolution

Answer 3

homology, covergent evolution, Structure of proteins, DNA, common use of ATP, fossil records, geographical distribution

Question 4

microevolution

Answer 4

evolution within species

Question 5

migration

Answer 5

gene flow between populations when individuals or gametes mirgrate from one pop to another

Question 6

macroevolution

Answer 6

how species evolve

Question 7

introgression

Answer 7

intercrossing between hybrids and parents, hybrids often sterile because chromosomes do not pair properly at meiosis