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Chapter 4. Diversity of Life. Slime Mold. http:// www.youtube.com/watch?v=GScyw3ammmk. Shrew. Human Bugs. Species Diversity. All the different species of life on Earth. Traits. Characteristics organisms inherit from parents. Gene. Chemical code for a trait Thousand on DNA. - PowerPoint PPT Presentation
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Chapter 4
Diversity of Life
Slime Mold
• http://www.youtube.com/watch?v=GScyw3ammmk
Shrew
Human Bugs
Biodiversity
Species
EvolutionSpeciation
Ecosystem
Benefits of an ecosystem“services”
Genetics
MutationNatural Selection
Adaptation
Species Diversity
• All the different species of life on Earth
Traits
• Characteristics organisms inherit from parents1. Shape of face (probably polygenic)
Oval dominant, square recessive2. Cleft in chin
No cleft dominant, cleft recessive3. Hair curl (probably polygenic)
Assume incomplete dominanceCurly: homozygous
Wavy: heterozygousStraight: homozygous
4. Hairline Widow peak dominant, straight hairline recessive
5. Eyebrow sizeBroad dominant, slender recessive
6. Eyebrow shapeSeparated dominant, joined recessive
7. Eyelash lengthLong dominant, short recessive
8. DimplesDimples dominant, no dimples recessive
Gene
• Chemical code for a trait• Thousand on DNA
Genetic Diversity
• The different genes found in one species
• Makes individuals different• Helps species survive when
climates / earth changes
Ecosystem Diversity
• The different ecosystems on Earth • Vary in• Climate• Geography• Plants• Animals
Conservation
• = Protect• Protect animals• Protect plants• Protect land
Why?• To maintain biodiversity- human survival
http://www.youtube.com/watch?v=9d16qkHpAXo
Conservationist
• Person• Job is to protect natural
resources• Work for EPA, Universities, or
organizations