Bio Unit 6

What is Law of Dominance

A Dominant Allele will express itself over a Recessive

What is Law of Segregation

When Chromosomes separate each cell will only get 1

What is Law of Independent assortment

Assortment of Chromosomes of one trait dosen’t affect those of another

What is Incomplete Dominance

The phenotype is in-between the two (HH+H’H’=HH’ or Curly+Straight=Wavy)

What is Codominance

Both Traits are expressed fully (BB+WW=BW)

What is Polygenic Inheritance

A Trait is produced by 2 or more Genes, Epistasis can occur (AaBBCc)

What are Linked Genes

Genes that are physically located on the same Chromosome (Ph/pH)

What are S*x-Linked Genes

Genes on S*x Chromosomes (XR+Xr=XRXr or No Hempohilia+Hemophilia=No Hemophilia)

What are 2 types of Mutations

Somatic, & Germ Line

What are 2 types of Gene Mutations

Point (Substitutes one for another), & Frameshift (Deletion of one)

What are 3 types of Chromosome Mutations

Duplication (Changes size), Translocation (Exchanges segments), & Nondisjunction (Chromosomes do not separate correctly)

What is a Autosomal Recessive Pedigree

Disease is rare, =Gender, Skips Generations

What is a Autosomal Dominant Pedigree

Disease is common, =Gender, Never skips Generations

What is Sex-Linked Reccesive Pedigree

Disease is rare, +Man, Skips Generations