Other Laws of Inheritance. Mendelian Genetics : characteristics controlled by dominant and recessive paired alleles Many traits follow the patterns outlined by Mendel’s Laws, many do not. Incomplete Dominance. Offspring heterozygous for a trait have an intermediate appearance .
of Mendel’s Monohybrid cross? (Tt xTt)
A, B, AB, O
These pictures are called karyotypes!
I’m a BOY!
I’m a GIRL!
Calico Cats: (Codominant X Linked Trait)
they have only one X chromosome and one Y
I’m always a girl!
Colorblindness: (Recessive X linked trait)
Hemophilia: (Recessive X-linked trait)
She must have been a “carrier”
Nondisjunction royal family offspring
Nondisjunction of Sex Chromosomes royal family offspring
Nondisjunction of Autosomes royal family offspring
Crossing Over and Linked Genes royal family offspring
Crossing Over: homologous chromosomes
line up during synapsis and exchange
Sometimes linked royal family offspring
genes will separate
when crossing over
The closer genes are
on the chromosome,
the less chance they
will be separated during
Sickle Cell Anemia royal family offspring: (Autosomal recessive)
I spread malaria!
Phenylketonuria (PKU): royal family offspring(Autosomal recessive)
Tay-Sachs Disease: royal family offspring (Autosomal Recessive)