Download Bell Ringer

Bell Ringer
List 2 different things we discussed in
class yesterday.
• I can distinguish between genotype and
phenotype.
Today
• Bell Ringer
• Traits(beginning) first half of class
• Play board games, reflection 2nd half
• What is a gene?
A gene is a part of the DNA code on a chromosome.
• How many genes do we have?
•
• The genes an organisms has—it’s genetic
makeup is called
Genotype
• When you look at a person you see the
organism’s ____________________
• Hair color,
• Combination of genetic makeup and the
environments effect on that makeup
phenotype
Environmental Impact on phenotype
• Internal
• External
• Neither
Neither
• Some aspects of phenotype are NOT affected
by the environment…
– Eye color
external
• The amount of light an organism receives
• The temperature in which the organism lives
• Example: tree leaves that grow in full sunlight
are thicker than those that grow in shadier
conditions
• Even though the genetic makeup is the same
Internal (phenotype)
• Human brain cells could not develop normally
unless they are acted on by the thryroid
hormone during development.
• This hormone is part of the body’s internal
environment.
Growth (environmental factor)
• To make it grow faster, plant the tree away
from others (WHY? Do you think?)
• In a forest trees compete for ……………..
Light, water, soil,
minerals, and others
Appearance
• Look at page 41
• Notice the buttercup (Fig. 4)
• The leaves that are in deeper water do not
bud, however the leaves in shallow water
produce the flowers.
• last sentence.
• Another phenotype
– Coloring on a simease cat
• They are pure white at birth.
• Colored markings (FIG. 5) develop more quickly on
cooler parts of the cat’s body such as the ears.
• In warmer climates the fur color might not develop fully
until the cat is more than a year old.
• Artic fox ( read to figure out why)
Game board Reflection
• Why should you receive an A?
• What did you learn about ecology, while
making your game?
• What would you change? if anything about
your game?
• Are the rules explained enough without being
so complicated that they will need to be read
multiple times to understand them?