Learning from the Fossil Record
Grade 8 Science
Name: Jake Cardelfe
Date: 3-14-11
Mutations Justified True or False
Statement
True or False
1. Environmental factors can
lead to variations between True
related organisms.
Justify why you chose T or F
If the environment changes the
organisms, which this is their
natural habitat, must adapt as
well to survive.
2. Mutations can be caused by
environmental factors, like
chemicals and sunlight.
True
If chemicals enter the body, the
cells may have a change in DNA.
3. Environmental factors
cannot alter genes.
False
4. Altered genes cannot be
passed on to offspring.
False
5. Mutations occur when the
genes in DNA are changed
and then passed on.
False
6. Altered genes that are
True
Some things like cigarette
smoke, radiation, some drugs
and more can get into peoples
bodies and alter genes
If a mother has a mutation it
will not be passed down to the
offspring unless it has to do
with the sperm or egg.
Mutations can occur by being
passed onto offspring but they
can also occur by radiation,
exposes to sun, some drugs, and
much more
If one mother or father has a
mutated gene that gets passed
on to the offspring that gene
could over power the other
gene. Resulting in the offspring
having the mutation
Not all mutations are passed
down to offspring. Some occur
with some drugs, radiation, and
more
passed on to offspring can
cause the traits of
generations to be
different.
7. Some mutations are not
passed on to offspring.
True
8. Mutations always create a
disadvantage for
offspring.
9. The environment plays a
role in determining if a
mutation is an advantage
or a disadvantage.
False
Sometimes a mutation can be
an advantage depending on the
environment.
True
If the animal has a mutation, it
can be an advantage depending
on the environment. For
example, if you put a light fur
animal in a dark environment, it
will be spotted easier. But if it
lives in a light environment it
Learning from the Fossil Record
Grade 8 Science
Name: Jake Cardelfe
Date: 3-14-11
10. All changes in traits are
due to mutations.
False
will be an advantage because it
will blend in.
Sometimes a gene changes
because it had to adapt to the
environment because it is
changing, not because its
mutated