Chapter 22

Question 1

Lamarck’s two principles for evolution

Answer 1

1) use and disuse

2) inheritance of acquired characteristics

Question 2

Use and disuse

Answer 2

Parts of body being used becomes stronger and larger (giraffes neck becomes longer reaching for leaves)

Question 3

Jean-Baptiste de Lamarck

Answer 3

18th century naturalist, only one at time to propose HOW life changes over time, was completely wrong

Question 4

Artificial selection

Answer 4

Selective breeding of domesticated plants and animals for desirable traits

Question 5

Homology

Answer 5

Similarity in characteristics resulting from shared ancestry

Question 6

Homologous structures

Answer 6

Structures in species that are similar bc of common ancestry (think of whale bat human cat diagram)

Question 7

Vestigial structures

Answer 7

A feature of an organism that is a historical remnant of a structure that serves a function in the organisms ancestors (snakes have pelvises from ancestors that had legs)

Question 8

Convergent evolution

Answer 8

Evolution of similar features in independent evolutionary lineages

Question 9

Biogeography

Answer 9

Scientific study of past and present geographic distributions of species