Do Now 5/1 (HW Check). Objectives: Define evolution, variation, natural selection, and adaptation Describe how evolution produces organisms that are better adapted to their environment. Task:
Define evolution, variation, natural selection, and adaptation
Describe how evolution produces organisms that are better adapted to their environment.
The experiment we conducted attempted to show the (effect/affect, circle one) of temperature on photosynthesis
I wonder how climate change (effects/affects) bird migration.
Are the moths with the dark phenotype
easier to see in the polluted or
As you might expect,
things weren’t so clear
cut. For example, do
You think the moth at
right is more black or
Because Kettlewell did
all of the classifying and
ignored the large number
of phenotypes “in between” black and white, his study has been
Regardless of those concerns, it has been demonstrated that,
as you might expect, darker moths survive better in darker forests.
Because of mutation and recombination of genes, there is variation in a population
Selection occurs when some heritable variations allow organisms to survive and reproduce more
Adaptation has two meanings: 1. The process by which an organism becomes better fit to its environment due to selection, and 2. A characteristic of an organism that makes it more fit in its environment.
The Moth Example (Species = organisms able to reproduce together)
Color variation from light to dark
Certain colors survive & reproduce more
The moths are more fit because they are better camouflaged