Bell-Ringer Genetics Intro Make a prediction: 1. If a black rabbit and white rabbit mate, what color would their offspring be? 2. If we cross a red rose and a white rose, what color rose would result? 3. If we cross a small plant and tall plant, what height would result? 4. If your Mom has hairy knuckles and your Dad has hairless knuckles, what type of knuckles would you have?

Monohybrid Cross h h H h Hh Hh 50% of the offspring will be hairy & 50% will be hairless. hh hh

Dominant VS. Recessive Dominant Gene: gene whose trait always shows itself (Hairy knuckles). Recessive Gene: gene of a trait that is hidden when the dominant gene is present (Hairless Knuckles).

Genotype VS. Phenotype Genotype:  (GENES) the two letters that make up a trait  (HH, Hh, hh) Phenotype: what the letters stand for (Hairy knuckles, Hairless Knuckles)

Homozygous VS. Heterozygous Homozygous: a trait made up of the same letter--said to be purebred (HH, hh) Heterozygous: a trait made up of a dominant and recessive gene (Hh) HYBRID

Dominant Gene: gene whose trait always shows itself (Hairy knuckles). Recessive Gene: gene of a trait that is hidden when the dominant gene is present (Hairless Knuckles). Genotype:  the two letters that make up a trait  (HH, Hh, hh) Phenotype: what the letters stand for (Hairy knuckles, Hairless Knuckles) Homozygous: a trait made up of the same letter--said to be purebred (HH, hh) Heterozygous: a trait made up of a dominant and recessive gene (Hh)