SOME CASES OF SEXUAL DIMORPHISM UNIT 4 The reproduction function Natural Science 2. Secondary Education
SOME CASES OF SEXUAL DIMORPHISM
Dec 30, 2015
UNIT 4. The reproduction function. SOME CASES OF SEXUAL DIMORPHISM. Natural Science 2. Secondary Education. UNIT 4. Some cases of sexual dimorphism. Animals that do not display sexual dimorphism. - PowerPoint PPT Presentation
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SOME CASES OF SEXUAL DIMORPHISM
UNIT
4The reproduction function
Natural Science 2. Secondary Education
Some cases of sexual dimorphism
• In certain species of animals, the two sexes differ only in their sexual organs. This means that they do not exhibit sexual dimorphism.
• Examples are rabbits, cats, transparent gobies, etc.
Animals that do not display sexual dimorphism
Female cat Male cat
Male transparent goby
Female transparent goby
UNIT
4
Natural Science 2. Secondary Education
• In other species, in addition to having different reproductive organs, females and males are very different in their appearance: these species exhibit sexual dimorphism.
• Examples of species that display sexual dimorphism are lizards, lions, many birds, human beings, etc.
Sexual dimorphism
Male teal
Female teal Male lizard
Female lizard
Some cases of sexual dimorphismUNIT
4
Natural Science 2. Secondary Education
Sexual dimorphism
Male deer
Female deer
Male pheasant
Female pheasant
Female blackbird
Male blackbird
Some cases of sexual dimorphismUNIT
4
Natural Science 2. Secondary Education
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