any difference in traits between individual organisms
variation
a specific form of a gene that provides instructions for making a protein molecule
gene version
the _______ of a protein molecule depends on its structure and how it interacts with other protein molecules.
each gene version provides a unique instruction to make a ___________ protein molecule in an organism's cell.
specific
a type of large molecule that performs important functions inside organisms
protein molecule
the process in which two parents pass off their genes to create offspring
sexual reproduction
a specific characteristic of an individual organism
trait
differences in the _________ of protein molecules affect how they connect to other protein molecules.
structure
an organism has _______ copies of a gene for each feature.
two
having gene versions that are DIFFERENT
heterozygous
an instruction for making a protein molecule
gene
having gene versions that are the SAME
homozygous
the structure of molecules determines how they function at a molecular scale, which determines the _________ of the object they make up.
properties
the two copies of a gene for each feature can be the same version (_________) and provide instructions for only one type of protein.
homozygous
the way something is shaped or constructed
structure
a characteristic that all members of a species have
feature
how something works
function
organisms can have different _________ in their cells for a particular feature.
proteins
the two copies of a gene for each feature can be different versions (_____________) and provide instructions for two types of proteins.
heterozygous
each parent _________ passes on one of its two copies of each gene to its offspring.
randomly
to receive genes from a parent
inherit
a random change to a gene that sometimes results in a new trait
mutation
genes are _____________ for proteins.
instructions
organisms inherit their genes through ___________.
sexual reproduction
through sexual reproduction, each offspring can inherit a _________ combination of gene versions. therefore siblings can have different traits from each other and even from their parents.
different