Chapter 2 Section 2: how traits are passed from the parents to the ...

Chapter 2 Section 1 ¨C discussed the effect of the

environment on the phenotype of individuals ¨C

light, population ratio, type of soil,

temperature¡­)

Chapter 2 Section 2: how traits are passed from

the parents to the offspring

Chapter 2 Section 3:

Environmental impact on a whole population

over time

( or: the effect of the environment on the

inherited traits of a species as a whole, not only

individuals)

We will study Evolution

What is Evolution?

? It

is the change in the genetics of a

species over time

( if the genotype changes, also the

phenotype will change)

Old ideas about Evolution

? Beginning

of the 1800¡¯s :

all known species were created at the same

time and remained unchanged throughout

history.

? Creationism

¨C is the name of the theory

that explains that all creatures were

created by God.

Old ideas about Evolution

? There

are 2 main initial Evolution

Theories

? Lamarck¡¯s

? Darwin¡¯s

theory

theory

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