Occasionally males defend a web solitarily males only

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: only mate once in their lifetime, and brothers never mate with the same female. Under the different conditions, the males produce different numbers of offspring: Large male: Small male: Shared Web 75 offspring 60 offspring Solitary 95 offspring 10 offspring Should large males permit small brothers onto their web? ________ Explain your answer verbally and mathematically using Hamilton’s rule or inclusive fitness. Show your work. Page 7 of 8 Introduction to Behavior BioNB 2210 44. Exam 2, Oct. 29, 2012 (4 points) In the two following examples of field experiments describe how the results help explain why group-living/cooperative breeding occurs in each species: Nest boxes placed in red-cockaded woodpecker habitat reduced the number of helpers at nests _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ Seychelles warblers transported to an uninhabited (by warblers) island lead to a decrease in helping at first as the population grew, and then a steady increase in helping later on. _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ 45. (4 points) List two challenges to Hamilton’s Haplodiploidy hypothesis, and explain whether or not this counters Hamilton’s general theory of kin selection. _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ Page 8 of 8 Introduction to Behavior...
View Full Document

This note was uploaded on 01/13/2014 for the course BIONB 2210 taught by Professor Seeley during the Fall '10 term at Cornell University (Engineering School).

Ask a homework question - tutors are online