Location on a chromosome that
contains the DNA code for a trait.
• gene
All the living things and nonliving
things that surround and affect an
organism
• environment
A way of acting that is pasted from
parents to offspring.
• instinct
Process by which most cells divide.
• Mitosis
Stages that living things past through
as they grow and change.
• Life cycle
Thread like structure in a cell nucleus.
• chromosome
Characteristics pasted from parents to
offspring
• Inherited trait
A characteristic that appears when
there is no factor present for it
• Dominant Trait
An egg hatches into a caterpillar, which
eats, becomes a pupa, emerges as a
moth, and lays eggs. This is an example
of what?
• Life Cycle
A frog moves to a nearby pond
because its own pond is drying up.
What changed for the frog to cause it
to move?
• The environment
You get a sunburn. A week later, the
dead skin peels off. What process
formed the new skin underneath the
peeling skin?
• Meiosis
What do most body cells make when
they go through division?
• Exact copies of themselves
What forms as a result of meiosis?
• Gametes with half the number of
chromosomes.
Rosa and Rita are identical twins. That
trait is a result of their environment?
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•
•
•
A. hairstyles
B. brown eyes
C. Tongue rolling
D. unattached earlobes
Tippy the cat does many things. Which
behavior is an instinct?
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•
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A. ringing the doorbell
B. meowing along with the radio
C. sleeping more hours than he’s awake.
D. Running to the kitchen when a can is
opened
Adam can roll his tongue. His younger
brother Lee cannot. Which statement
explains why?
• A. Adam can do it because he is older.
• B. Adam has a dominant factor for tongue-rolling.
• C. Lee can’t because he hasn’t practiced enough
yet.
• D. Lee has a dominant and recessive factor for
tongue-rolling.
Bob’s parents both have attached
earlobes-a recessive trait. The are
expecting a baby boy. What can you
infer about the likelihood that Bob’s
baby brother will have attached
earlobes?
• The baby will have attached earlobes, because
two recessive traits are necessary.