Genetic Basics

Basic unitof inheritance within a chromosome and are composed of DNA.

1 of 2 or more differnt genes that occupy a specific locus on a chromosome.

Possesing a pair of identical alleles at a given locus.

Possesiing different alleles at a given locus.

Possessing a gene on the X chromosome of a male where there is no equivelant on the Y chromosome.

Type of cell division in which each daughter cell is identical to the parent.

Is the type of cell division unique to germ cells resulting in gametes with one copy of each chromosome.

The inheritance of 1 gene does not affect the inheritance of another.

The physical association between 2 genes located on the same chromosome.

2 segs change places - shuffles genetic material

Genes on the same chromosome of a homologous pair.

• Gene on the opposite chromosome of a homologous par
• ie.
• M & s are in trans position but M & S are on Cis position
• M-------S
• N-------s

Is the actual genetic make up.

Is the observed trait

• Unknown RBC + Anti-K = positive reaction
• Unknown RBC + Anti-k = positive reaction

• Phenotype would be: K+k+ (single dose of EACH antigent)
• Genotype would be:Kk (heterozygous

The site of a gene on a chromosome.

The structures within a nucleus that contain a linear thread of DNA, which transmits genetic info. Gene are arranged along a strand of DNA and constitute a portion of the DNA.

1st generation is skipped.  

 males and females are equally affected

1st generations will NOT be skipped

Co-dominant