Learning from the Fossil Record
Grade 8 Science
Name: Liam McAlister
Date: 1/3/11
Genes and Chromosomes Justified True or False Worksheet
Statement
PRE
True or
False
True
PRE
JustificationWhy did you choose T or F?
DNA contains all the information the
organism needs/looks like-previous
knowledge.
POST
True or
False
True
POST
JustificationWhy did you choose T or F?
DNA is made up of genes. Genes
contain the instructions that determine
the trait.
Genes are found in DNA, which are
found in chromosomes, which are
found in a cell’s nucleus.
True
All of these are found in cells-previous
knowledge from class earlier this year
and also an inference.
True
Each trait of an organism is
determined by a gene.
False
It is determined by DNA.
True
Humans have 46 chromosomes, half
come from each parent.
True
I remember hearing this in science
earlier this year.
True
The cells in a person’s eyes only
have the eye color gene, all other
cells do not have that gene.
True
Only some organism’s cells contain
chromosomes, genes, and DNA.
False
The genes in the eyes were specifically
False
assigned those traits, where other parts
of the body weren’t because they
didn’t need them.
All organism’s cells have genes,
False
chromosomes, and DNA
We have two genes for each trait in
True
Inside the cell’s nucleus contains 46
chromosomes (23 from each parent),
which contains DNA that is made up of
genes that contain all of the
information the cell needs.
Each gene contains the information
that determines a trait. It is inherited
information from the parents.
23 come from the sperm cell, and 23
come from the egg cell during
reproduction to create the first cell
with a total of 46 chromosomes.
The cells in the eye have all of the
genes it is just that they don’t apply the
information in them because they don’t
need them.
All organisms have chromosomes,
genes, and DNA in every cell because
they need them to provide them
instructions.
There are two genes for every trait
The instructions that determine an
organism’s traits are found in an
organism’s DNA.
This is because the DNA it is found in
True
Learning from the Fossil Record
Grade 8 Science
Name: Liam McAlister
Date: 1/3/11
our cells but each gene might have
different instructions for the same
trait.
has an effect on it because of where it
is found in the body.
Genes contain information that can
be passed from parent to offspring.
True
Through the process of reproduction,
certain genes are used to produce the
offspring.
T rue
Inherited characteristics are called
traits and are passed from parent to
offspring.
False
Genes are called the inherited
characteristics that are passed from the
parent to the offspring.
True
Reproduction does not play a role in
inheriting traits.
False
If reproduction didn’t exist, then traits
couldn’t be passed into another
organism.
False
because one comes from each parent
during reproduction. They would
probably not have the same
instructions because each parent
doesn’t have the same genes for
everything.
When the parents reproduce and
create an offspring, they take 23
chromosomes from the sperm and egg
cell each to make 46 chromosomes in
the new cell. These chromosomes
contain all of the DNA and
genes/information that the parents
had.
When sperm and egg reproduce, they
take 23 chromosomes each and create
a new cell with 46. These
chromosomes contain all of the genes
(essentially a trait) from each parent.
It is impossible for traits to be inherited
unless they are passed through the
process of reproduction.