Pedigrees and Punnet Squares

Module 5 - biology

Who conducted the pea experiment and is considered the father of genetics

Gregor Mendel

Mendel’s first law

Random segregation:

Characteristic pairs segregate when gametes are formed and only contain one factor/trait

Mendel’s second law

Independent assortment:

Factors sort independently of other pairs, applies to characteristics on different chromosomes

Genotype

Alleles present for a particular gene

Homozygous

Two identical alleles

Heterozygous

Two different alleles

Dihybrid cross

genetic cross of two characteristics

How do you order siblings in a pedigree

In birth order form left to right