• Support PF! Buy your school textbooks, materials and every day products Here!

Evolution-Natural selection types

  • Thread starter samdiah
  • Start date
  • #1
81
0

Homework Statement



Identify the type of natural selection (distruptive, stabilizing, directional, sexual, runaway or cummullative) operating in these examples:

a) The diversity among honey creepers

b) Peacock’s tail

c) Central nervous system

d) Egg size in robins

e) Body size in blue whale

f) Courtship dance of blue-footed booby

Homework Equations



I read about all the different types of selection.


The Attempt at a Solution



These are the solutions I came up with, but i really don't understand some of them.

a) The diversity among honey creepers is a disruptive selection. ----not sure at all about this one

b) Peacock’s tail is sexual runaway selection.

c) Central nervous system is cumulative

d) Egg size in robins is ----not sure at all about this one

e) Body size of whale is directional selection.

f) Courtship dance shows sexual selection

If someone can check for me and tell me as soon as possible it will be really appreciated.

:surprised
 

Answers and Replies

Related Threads for: Evolution-Natural selection types

  • Last Post
Replies
2
Views
906
Replies
1
Views
2K
  • Last Post
Replies
7
Views
7K
  • Last Post
Replies
6
Views
5K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
2
Views
9K
  • Last Post
Replies
3
Views
5K
  • Last Post
Replies
0
Views
855
Top