1. The Punnett’s Square
Gregor Mendel

2. The Punnett’s Square Gregor Mendel is the “Father of Genetics”
Gregor Mendel was a monk in Austria
He raised peas in a monastery garden
Genetics
5/19/2019

3. The Punnett’s Square He noted that peas had several traits
Traits are characteristics that help to identify items
Some traits are tall
Some traits are short
Some traits had smooth pods
Some traits had wrinkle pods
Some pods were pink
Some pods were green
Genetics
5/19/2019

4. The Punnett’s Square
Mendel looked at each trait and notice that they were passed down through the off springs of the peas.
He also noted that an individual’s looks and their genetic code is not always pass down.
This difference is because of their genotype and phenotype
Genetics
5/19/2019

5. The Punnett’s Square Genotype is the actual genetic makeup
The traits that identify the person
Genetic codes
Its fingerprint
Phenotype is what the individual look like
The traits that show physical features
How tall?
How short?
Genetics
5/19/2019

6. The Punnett’s Square
Dominant traits are traits that shows up more often
Same kind of genes
Similar cells
Recessive Traits are traits that does not show often
Hybrid individuals can look like they have dominant traits (phenotype) but can be hybrid (genotype)
Genetics
5/19/2019

7. The Punnett’s Square Alleles are different forms of a gene.
For example:
Brown eyes
Tall
Short
Some hybrid plants can be carrying the allele for a recessive trait even if you can’t see it. (Mother is tall, but the child is short)
Genetics
5/19/2019

8. The Punnett’s Square Some Examples of Some Traits: T – Tall allele
t- Short allele
Tt- Mixed hybrid
tt- Short allele T T TT TT T TT TT T
Genetics
100% of all off springs will be tall
5/19/2019