Why the evolution selects for males that mimic females, even though the chances of success is relatively low. Concept introduction: Australian giant cuttlefish ( Sepia apama ) show sexual dimorphism. The males and females of the species greatly differ from each other in appearance. Females have shorter arms and dark patches on a white background. On the other hand, the males have longer arms and are whiter. The species has a sex ration of four males to one female, leading to fierce competition among males for fathering the offspring. The largest males mate with the females and guard them after insemination. The males fight with other males that try to inseminate the females. This behavior accounts for larger male’s reproductive success. The smaller males use another behavioral strategy called deception. They disguise themselves as a female by hiding the arms and changing skin color. This behavior allows the smaller males to increase their chances of reproductive success.

Question

Want to see the full answer?

Answer 1

Question

Chapter 36.6, Problem 1MC

Summary Introduction

To determine:

Why the evolution selects for males that mimic females, even though the chances of success is relatively low.

Concept introduction:

Australian giant cuttlefish (Sepia apama) show sexual dimorphism. The males and females of the species greatly differ from each other in appearance. Females have shorter arms and dark patches on a white background. On the other hand, the males have longer arms and are whiter.

The species has a sex ration of four males to one female, leading to fierce competition among males for fathering the offspring. The largest males mate with the females and guard them after insemination. The males fight with other males that try to inseminate the females. This behavior accounts for larger male’s reproductive success.

The smaller males use another behavioral strategy called deception. They disguise themselves as a female by hiding the arms and changing skin color. This behavior allows the smaller males to increase their chances of reproductive success.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

*Example 2: Tracing the path of an autosomal dominant trait Trait: Neurofibromatosis Forms of the trait: The dominant form is neurofibromatosis, caused by the production of an abnormal form of the protein neurofibromin. Affected individuals show spots of abnormal skin pigmentation and non-cancerous tumors that can interfere with the nervous system and cause blindness. Some tumors can convert to a cancerous form. i The recessive form is a normal protein - in other words, no neurofibromatosis.moovi A typical pedigree for a family that carries neurofibromatosis is shown below. Note that carriers are not indicated with half-colored shapes in this chart. Use the letter "N" to indicate the dominant neurofibromatosis allele, and the letter "n" for the normal allele. Nn nn nn 2 nn Nn A 3 N-

I want to be a super nutrition guy what u guys like recommend me

Please finish the chart at the bottom. Some of the answers have been filled in.