PPT-Monohybrid &

Dihybrid Crosses Probability and Genetics Why did Mendel use Pea Plants easy to control pollination Pea Flower Stamens male produce pollen Pistil female produces ovules seven distinct inherited traits. Are you dominate or recessive?. Tongue rolling . Dominate – Roller. Recessive – Non Roller. Bent little fingers  . Dominate – Bent. Recessive – Straight. Widow’s peak. Dominate – Widow’s Peak. Dihybrid. Crosses. 8.2. Monohybrid Crosses. Looking at one characteristic. Shows what the offspring genotypes could be. This first generation is known as . F. 1. Crossing this first generation for the second generation would be known as . Hypothesis: The antenna shape follows monohybrid inheritance, where the allele of Knobbed antenna is dominant and the allele for Short antenna is recessive. . Step 1: . Mate two individuals with short antenna. Squares. Genes and Alleles. Gene: Place on chromosome and determines certain trait. Allele: variation of that trait. Ex: . Gene: Eye color. Located on 5. th. gene from the top. Alleles: Brown, Blue, Green, Gray. Two mice are both heterozygous for eye color. Determine the genotype and phenotype fractions of their children.. E= black eyes e= red eyes. Problem # 1. Silkworms. C= yellow cocoon c = white cocoon. and . codominance. Patterns of Inheritance. Learning outcomes. (. i. ) . genetic diagrams to show patterns of . inheritance. To . include . monogenic inheritance, . dihybrid inheritance, multiple alleles, sex linkage and . Describe the work of . Gregor. Mendel. Describe monohybrid inheritance using . punnett. square diagrams. Mendel. Glossary. Allele. Dominant . Recessive. Genotype. Phenotype. Homozygous. Heterozygous. Two organisms. One characteristic. Complete dominance . Solving Genetics Problems : Monohybrid Crosses. Complete dominance . the . dominant allele. completely masks the effect of the . recessive allele. Punnett Squares . To help explain how alleles were separated into gametes and rejoined, . Reginald Punnett . developed a visual tool to depict test crosses and show the offspring’s possible genotypes and phenotypes . One allele from a female egg is joined with one allele from a male sperm.. Probability and predicting inheritance. Since alleles for a trait separate during meiosis, we can use the laws of probability to predict genetic outcomes..