Chapter 4

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