How can we help?
You can also find more resources in our
Select a category
Something is confusing
Something is broken
I have a suggestion
What is your email?
What is 1 + 3?
Terms used in the study of genetics
the passing of traits from parents to offspring
a characteristic that an organism can pass on to its offspring through its genes
The scientific study of heredity
the offspring of many generations that have the same traits
the section of a chromosome that controls a trait
the different forms of a gene
an allele whose trait always shows up in the organism when the allele is present
an allele that is masked when a dominant allele is present
an organism that has two different alleles for a trait
the likelihood that a particular event will occur
a chart that shows all the possible combinations of alleles that can result from a genetic cross.
physical characteristics of an organism
genetic makeup of an organism
having two identical alleles for a trait
having two different alleles for a trait
occurs when both alleles for a gene are expressed in a heterozygous offspring
the process by which the number of chromosomes is reduced by half to form sex cells
a random error in gene replication that leads to a change
Characteristic such as red-green color blindness, controlled by genes on the X chromosome also called an X linked trait.
a person who has one recessive allele for a trait, but does not have the trait
an inherited disease or disorder that is caused by a mutation in a gene or by a chromosomal defect
A chart or "family tree" that tracks which members of a family have a particular trait
A picture of all the chromosomes in a cell arranged in pairs