Learning from the Fossil Record
Grade 8 Science
Name: Caroline B.
Date: 1/3/10
Genes and Chromosomes Justified True or False Worksheet
Statement
PRE
True or
False
True
PRE
JustificationWhy did you choose T or F?
I chose true because when we learned
about living systems we learned that
the DNA is instructions for each cell on
what they do. That is why each cell has
a certain structure.
POST
True or
False
True
Genes are found in DNA, which are
found in chromosomes, which are
found in a cell’s nucleus.
False
I think that chromosomes are found in
DNA, not DNA found in chromosomes.
True
Each trait of an organism is
determined by a gene.
True
I think that each gene has some
“instructions” on what each organism
should be like.
True
Humans have 46 chromosomes, half
come from each parent.
True
I remember this from a video we
watched. Except not sure if the amount
is correct.
True
The instructions that determine an
organism’s traits are found in an
organism’s DNA.
POST
JustificationWhy did you choose T or F?
I chose this because I know that the
instructions to determine an organism’s
traits are inside the genes, and the
genes are located inside the DNA. This
means that the answer is technically
true.
I chose this because when we went to
the website for the Explore Heredity
assignment we saw that inside the
boy’s arm were cells. Then we went to
the cell’s nucleus, which contained
chromosomes, which was made up of
DNA to hold the genes.
I chose this because in the part about
“What’s the Big Idea About Genetics”
on the website Mr. Bormann gave us it
stated that the parts of our cells that
determine eye color or hair color are
the genes.
I chose this because we have been
constantly talking about how many
chromosomes we have in each cell, and
in the Extend Chromosomes
assignment we had to answer this
question, and I got it right.
Learning from the Fossil Record
Grade 8 Science
Name: Caroline B.
Date: 1/3/10
The cells in a person’s eyes only
have the eye color gene, all other
cells do not have that gene.
True
Only the eye cells will have that color
gene, and no other cell needs it.
I learned it from a video in class.
False
Only some organism’s cells contain
chromosomes, genes, and DNA.
False
All organisms’ cells have genes to have
them know what to “look like” and how
to do their “jobs”.
False
We have two genes for each trait in
our cells but each gene might have
different instructions for the same
trait.
True
Because one is from my mom and one
from my dad, and their bodies might do
the same job a little different than each
other.
True
Genes contain information that can
be passed from parent to offspring.
True
Most genes are passed to an offspring
to a parent. I know this from further
knowledge.
True
Inherited characteristics are called
traits and are passed from parent to
True
I learned this from sitting in class, and
paying attention.
False
I chose this because we talked about
the cells in every part of our body
having all the chromosomes in each
cell, but the eye color trait will only
read the eye color chromosome for
information in a person’s eyes. This is
because that is all the information that
it needs. We also talked about this in
the review of our homework on the
Explore Heredity document.
I chose this because every organism
needs chromosomes to hold the DNA,
to contain the genes so the organism’s
traits can know what they should look
like.
I chose this because we do have two
genes for each trait. One from my mom
and one from my dad. And these genes
might have different instructions
because if it is for eye color my mom
might have green eyes, so the gene’s
instructions’ is to have green eyes, and
my dad’s might be different.
I chose this because when an egg and
sperm are connected together the
genes from the sperm and egg are
copied exactly to the offspring. This
means that the information from the
genes inside the sperm and egg are also
going to be passed to the offspring.
I chose this because we inherit two
genes from our mother and father
Learning from the Fossil Record
Grade 8 Science
Name: Caroline B.
Date: 1/3/10
offspring.
Reproduction does not play a role in
inheriting traits.
False
Reproduction is when you inherit traits.
I just know from further knowledge.
False
combined to go under the category of
the “hair color trait”.
I chose this because reproduction is the
whole reason why we inherit traits.
Without reproduction the sperm and
egg wouldn’t create an offspring with a
copy of the sperm’s 23 chromosomes,
and the egg wouldn’t create a copy of
it’s 23 chromosomes.