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11. A) Why do we generally see animals with eggs and sperm for gametes (i.e., why do we have two sexes)? B) Why is the sex ratio usually 1 to 1 (use an ESS argument in your answer)?

11. A) Why do we generally see animals with eggs and sperm for gametes (i.e., why do we have two sexes)? B) Why is the sex ratio usually 1 to 1 (use an ESS argument in your answer)?

Anatomy & Physiology
Anatomy & Physiology
1st Edition
ISBN:9781938168130
Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Chapter27: The Reproductive System
Section: Chapter Questions
Problem 20CTQ: Briefly explain why mature gametes carry only one set of chromosomes.
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11. A) Why do we generally see animals with eggs and sperm for gametes (i.e., why do we have two sexes)? B) Why is the sex ratio usually 1 to 1 (use an ESS argument in your answer)?
Transcribed Image Text:11. A) Why do we generally see animals with eggs and sperm for gametes (i.e., why do we have two sexes)? B) Why is the sex ratio usually 1 to 1 (use an ESS argument in your answer)?
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