Genotypic Ratios and Phenotypic Ratios for Punnett Squares скачать в хорошем качестве

Genotypic Ratios and Phenotypic Ratios for Punnett Squares

In this video I will discuss setting up the ratios and percents of a punnett square. Once you have set up the Punnett square you can begin writing out the genotype ratios and the phenotype ratios When writing the ratios use, homozygous dominant heterozygous, homozygous recessive. You can write the genotype ratios and the phenotype ratios Remember when calculating percents each box equals 25% Example 1 Tall is dominant to short Both parents are heterozygous We will first set up the ratios We will set them up Homozygous Dominant Heterozygous Homozygous recessive Genotype will be 1:2:1 The percents will be 25:50:25 Phenotype will be 3:1 remember a capital letter will be dominant and you only get a recessive trait when having two lower case letters Example two red color is dominant to white You have a heterozygous parent and a homozygous for the dominant trait Genotype will be 0 for homozygous dominant 2 heterozygous 2 homozygous recessive Written 0:2:2 or a 2:2 or reduce to 1:1 Genes vs Alleles    • Alleles vs Genes  | Genetics |