1. Genetics Vocabulary

2. Allele- Gene form of a trait (represented by a letter)
Ex: Brown hair = B
Gamete- Sex cell (sperm & egg)
Gives 1 allele to offspring
Has 23 chromosomes
Dominant- Overpowers the recessive trait
Represented by capital letters
Ex: A, B, F

3. Recessive- “Weaker”/gene hidden by dominant trait
Ex: a, b, f
Heterozygous- Having DIFFERENT alleles/genes
Ex: Hh
Homozygous- Having the SAME alleles/genes
Ex: HH, hh

4. Genotype- The combination of alleles (letters) Ex: BB, Bb, bb
Genotypic Ratio-
Ex BB : Bb : bb
(Homo Dom : Hetero : Homo Recess)

5. Phenotype- How the trait appears. Physical description
Ex: Brown hair, Blue eyes
Phenotypic Ratio- Ex Brown hair : Blonde hair
(BB or Bb) : (bb)
Dominant trait : Recessive trait