Inventor & Heterozygous & Phenotype
Who invented Punnett squares?
Reginald Crundall Punnet
What is the definition of genotype?
An organism's genetic makeup (ex. Aa, aa, AA)
Define Dominant
A trait that is expressed or covers, another form of that trait
Define recessive
A trait that is not expressed, or is hidden, whenever there is a dominant trait present. A recessive trait can only show up when there is no dominant allele present
Define Homozygous
Offspring inherit two of the exact same alleles
Define Phenotype
Outward physical appearance and/or behavior of an organism (adjectives)
Explain how to use the information from a punnet square.
Be able to set up and use the information from a punnett square to determine the percentages of unique genotypes
Describe Use of dominant
When solving a punnett square
Both alleles are capital letters
Dominant
Offspring has two different alleles
Heterozygous
The different forms of a trait a gene might have
How do you use?
alleles; when solving a punnet square
Both alleles are lowercase letters
Recessive
Even though it has both alleles, it only expresses the dominant trait
Heterozygous dominant
Since neither allele is dominant, both versions of the trait are expressed equally (example: a red flower and a white flower produce pink offspring)
Heterozygous (no dominant or recessive):