spliting geneS


Is the study of genetics

Founder of genetics

Gregor Mandel is the founder of genetics, he did this by doing experiments with pea plants. He found that genes are aquired from both parents and that traits have dominant and recessive alleles.


pattern where phenotype of both homozygote parents are produced in heterozygous offspring so that both alleles are equally expressed EX: TT + tt = Tt

Incomplete Dominance

Inheritance pattern where the phenotype of a heterozygote is intermediate between those of the two homozygotes; neither allele of the pair is dominate but combine to make a new traitEX: A yellow and blue phenotype mix to make a green phenotype

Multiple Alleles:

Presence of more then two alleles for a genetic traitEX: BBa

Sex-linked traits

These are traits that are controlled by genes located on the sex chromosomes. An example of this is the red eye, white eye traits in houseflys. The eye color trait was located on the X chromosomes but not the Y chromosomes

Punnett Square

Genotype: GG 25% // Gg 50% // gg 25%          Phenotype: 75% Dominate// 25% recessive