Heredity

Genetics

Mendel created

Hybrids

character

A trait

The seven characters studied by Mendel

Tracking one
character
(flower color)

Mendel’s four hypotheses (1 & 2)

Mendel’s four hypotheses (3 & 4)

1. Mendel’s Law of Segregation

2. Mendel’s Law of Independent Assortment

What is a Dihybrid cross?

Incomplete dominance

Codominance

Epistasis

Environment

Polygeneic inheritance

Pleiotropy and sickle cell disease

Multiple alleles

Human ABO blood groups are an example of
multiple alleles and codominance

Multiple alleles for the ABO blood groups

Sex chromosomes and sex-linked genes

genetic abnormality

genetic disorder

Inheritance patterns in humans are often studied by

Pedigree

Syndrome

Any gene located on a sex chromosome is called

Sex-linked traits

HYPERTRICHOSIS

Linked genes

Genetic recombination: crossing over