Learning from the Fossil Record
Grade 8 Science
Name:
Date:
Mutations Justified True or False
Statement
True or False
Justify why you chose T or F
organisms can get mutations OR
defects in their genes that can
cause them to be different than
others
1. Environmental factors can
lead to variations between
related organisms.
TRUE
2. Mutations can be caused by
environmental factors, like
chemicals and sunlight.
FALSE
chemicals and random birth
defects can
3. Environmental factors
cannot alter genes.
FALSE
Things in the environment that
maybe toxic or poisonous
4. Altered genes cannot be
passed on to offspring.
FALSE
Altered genes can be passed on
from parent to
5. Mutations occur when the
genes in DNA are changed
and then passed on.
6. Altered genes that are
TRUE
When the DNA is incorrectly
copied in the reproductive cell,
a mutation can be passed on
mutation will change that one
trait, the trait will be changed,
and if another mutation occurs,
the trait will change in another
generation again
passed on to offspring can
cause the traits of
generations to be
different.
7. Some mutations are not
passed on to offspring.
TRUE
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
10. All changes in traits are
due to mutations.
FALSE
TRUE
Certain mutations that occur
outside of the reproductive cells
will not be passed on to the
offspring
mutations can be an advantage,
sometimes
Because. If you’re an animal and
your home gets flooded and you
are born with gills that’s an
advantage but if the flood
drowns out you have a
disadvantage.
getting different genes will
change their traits